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| 1 | page | block_id | raw_label | content_preview | bbox | role | role_confidence | evidence | seed_role | seed_confidence | zone | style_family | marker_type | render_default | index_default |
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| 2 | 1 | 0 | header_image | [67.0, 127.0, 262.0, 313.0] | unknown_structural | 0.2 | ["unrecognized label 'header_image'"] | unknown_structural | 0.2 | frontmatter_main_zone | support_like | empty | False | True | |
| 3 | 1 | 1 | doc_title | In vitro effect of direct current electrical stimulation on rat mesenchymal stem cells | [362.0, 124.0, 1123.0, 264.0] | paper_title | 0.8 | ["page-1 zone title_zone: In vitro effect of direct current electrical stimulation on "] | paper_title | 0.8 | frontmatter_main_zone | support_like | none | True | True |
| 4 | 1 | 2 | text | Sahba Mobini $ ^{1,2,*} $, Liudmila Leppik $ ^{1,*} $, Vishnu Thottakkattumana Parameswaran $ ^{1} $ and John Howard Barker $ ^{1} $ | [361.0, 293.0, 1159.0, 350.0] | authors | 0.8 | ["page-1 zone author_zone: Sahba Mobini $ ^{1,2,*} $, Liudmila Leppik $ ^{1,*} $, Vishn"] | authors | 0.8 | frontmatter_main_zone | support_like | none | True | True |
| 5 | 1 | 3 | text | $ ^{1} $ Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, Johann Wolfgang Goethe Universität Frankfurt am Main, Frankfurt am Main, Germany | [355.0, 361.0, 1119.0, 404.0] | affiliation | 0.8 | ["page-1 zone affiliation_zone: $ ^{1} $ Frankfurt Initiative for Regenerative Medicine, Exp"] | affiliation | 0.8 | frontmatter_main_zone | support_like | affiliation_marker | True | True |
| 6 | 1 | 4 | text | $ ^{2} $School of Materials, Faculty of Engineering and Physical Sciences, University of Manchester, Manchester, United Kingdom | [355.0, 406.0, 1126.0, 447.0] | affiliation | 0.8 | ["page-1 zone affiliation_zone: $ ^{2} $School of Materials, Faculty of Engineering and Phys"] | affiliation | 0.8 | frontmatter_main_zone | support_like | affiliation_marker | True | True |
| 7 | 1 | 5 | text | These authors contributed equally to this work. | [357.0, 449.0, 712.0, 472.0] | frontmatter_support | 0.78 | ["first-surviving-page support text: These authors contributed equally to this work."] | frontmatter_support | 0.78 | frontmatter_main_zone | support_like | none | True | True |
| 8 | 1 | 6 | paragraph_title | ABSTRACT | [388.0, 510.0, 548.0, 539.0] | abstract_heading | 0.95 | ["abstract heading"] | abstract_heading | 0.95 | frontmatter_main_zone | heading_like | short_fragment | True | True |
| 9 | 1 | 7 | text | Submitted 12 July 2016 Accepted 22 November 2016 Published 12 January 2017 | [65.0, 948.0, 295.0, 1014.0] | frontmatter_noise | 0.8 | ["page-1 zone journal_furniture_zone: Submitted 12 July 2016\nAccepted 22 November 2016\nPublished 1"] | frontmatter_noise | 0.8 | frontmatter_main_zone | support_like | none | False | False |
| 10 | 1 | 8 | abstract | Background. Electrical stimulation (ES) has been successfully used to treat bone defects clinically. Recently, both cellular and molecular approaches have demonstrated that ES can change cell behavior | [383.0, 555.0, 1148.0, 1036.0] | abstract_body | 0.85 | ["abstract label from Paddle OCR"] | abstract_body | 0.85 | frontmatter_main_zone | support_like | none | True | True |
| 11 | 1 | 9 | text | cc Copyright 2017 Mobini et al. | [67.0, 1284.0, 202.0, 1333.0] | frontmatter_noise | 0.8 | ["page-1 zone journal_furniture_zone: cc Copyright 2017 Mobini et al."] | frontmatter_noise | 0.8 | body_zone | support_like | none | False | False |
| 12 | 1 | 10 | text | OPEN ACCESS | [70.0, 1408.0, 209.0, 1432.0] | frontmatter_noise | 0.7 | ["frontmatter noise text: OPEN ACCESS"] | frontmatter_noise | 0.7 | body_zone | body_like | short_fragment | False | False |
| 13 | 1 | 11 | text | Distributed under Creative Commons CC-BY 4.0 | [64.0, 1346.0, 316.0, 1391.0] | frontmatter_noise | 0.8 | ["page-1 zone journal_furniture_zone: Distributed under\nCreative Commons CC-BY 4.0"] | frontmatter_noise | 0.8 | body_zone | body_like | none | False | False |
| 14 | 1 | 12 | text | Additional Information and Declarations can be found on page 10 | [65.0, 1172.0, 306.0, 1238.0] | frontmatter_noise | 0.8 | ["page-1 zone journal_furniture_zone: Additional Information and Declarations can be found on page"] | frontmatter_noise | 0.8 | frontmatter_main_zone | support_like | none | False | False |
| 15 | 1 | 13 | text | Corresponding author Sahba Mobini, sahba.mobini@manchester.ac.uk, sahba.mobini@gmail.com | [64.0, 1023.0, 315.0, 1111.0] | frontmatter_support | 0.78 | ["first-surviving-page support text: Corresponding author\nSahba Mobini,\nsahba.mobini@manchester.a"] | frontmatter_support | 0.78 | frontmatter_main_zone | support_like | none | True | True |
| 16 | 1 | 14 | text | DOI 10.7717/peerj.2821 | [66.0, 1247.0, 249.0, 1271.0] | frontmatter_noise | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | False | False |
| 17 | 1 | 15 | text | Academic editor Jalees Rehman | [65.0, 1120.0, 203.0, 1165.0] | frontmatter_noise | 0.8 | ["page-1 zone journal_furniture_zone: Academic editor\nJalees Rehman"] | frontmatter_noise | 0.8 | frontmatter_main_zone | support_like | none | False | False |
| 18 | 1 | 16 | text | Subjects Bioengineering, Cell Biology, Orthopedics | [362.0, 1087.0, 788.0, 1112.0] | frontmatter_noise | 0.7 | ["keyword-like block: Subjects Bioengineering, Cell Biology, Orthopedics"] | frontmatter_noise | 0.7 | frontmatter_main_zone | support_like | none | False | False |
| 19 | 1 | 17 | text | Keywords Direct current electrical stimulation, Bone marrow-derived mesenchymal stem cells, Adipose tissue-derived mesenchymal stem cells, Bone tissue engineering | [361.0, 1114.0, 1136.0, 1166.0] | frontmatter_noise | 0.7 | ["keyword-like block: Keywords Direct current electrical stimulation, Bone marrow-"] | frontmatter_noise | 0.7 | frontmatter_main_zone | support_like | none | False | False |
| 20 | 1 | 18 | paragraph_title | INTRODUCTION | [363.0, 1201.0, 585.0, 1231.0] | section_heading | 0.9 | ["explicit scholarly heading: INTRODUCTION"] | section_heading | 0.9 | body_zone | heading_like | canonical_section_name | True | True |
| 21 | 1 | 19 | text | Large segment bone defects, caused by open fractures, non-unions, infections and tumor resection are a major challenge in trauma and orthopedic surgery. Complications associated with current treatment | [361.0, 1245.0, 1159.0, 1423.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 22 | 1 | 20 | footer | How to cite this article Mobini et al. (2017), In vitro effect of direct current electrical stimulation on rat mesenchymal stem cells. PeerJ 5:e2821; DOI 10.7717/peerj.2821 | [362.0, 1497.0, 1143.0, 1534.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | body_zone | body_like | none | False | False |
| 23 | 2 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 107.0] | noise | 0.9 | ["header label"] | noise | 0.9 | frontmatter_side_zone | support_like | short_fragment | False | False |
| 24 | 2 | 1 | text | hold great potential for achieving optimal bone healing while eliminating the associated drawbacks of conventional treatments (Petite et al., 2000). | [361.0, 167.0, 1149.0, 223.0] | unknown_structural | 0.8 | ["page-1 zone author_zone: hold great potential for achieving optimal bone healing whil"] | authors | 0.8 | body_zone | body_like | none | False | True |
| 25 | 2 | 2 | text | Mesenchymal stem cells (MSCs) have been shown to be an attractive cell source for clinical bone tissue engineering applications. MSCs possess a great capacity for self-renewal and multi-lineage differ | [361.0, 226.0, 1162.0, 758.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 26 | 2 | 3 | text | Electrical stimulation (ES) has been shown to be effective in nerve and cardiac tissue engineering applications, primarily due to the electric nature of these tissues (Ghasemi-Mobarakeh et al., 2011; | [362.0, 760.0, 1159.0, 1379.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 27 | 2 | 4 | text | Recently, various different types of physical stimuli such as static magnetic fields, cyclic strain, low frequency vibration, and electric signals have been used to improve | [362.0, 1382.0, 1133.0, 1439.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 28 | 2 | 5 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [63.0, 1501.0, 496.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | frontmatter_main_zone | reference_like | reference_pattern | False | False |
| 29 | 2 | 6 | number | 2/15 | [1117.0, 1503.0, 1158.0, 1522.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 30 | 3 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 107.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
| 31 | 3 | 1 | text | both the proliferative and the differentiation potential of stem cells. Specifically, ES has been shown to influence cell proliferation and differentiation in tissue engineering applications (Balint, | [361.0, 167.0, 1163.0, 670.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 32 | 3 | 2 | text | In the present study we exposed rat BM-MSCs and AT-MSCs to DC ES and compared osteogenic differentiation behavior in both cell types. | [363.0, 673.0, 1156.0, 730.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 33 | 3 | 3 | paragraph_title | MATERIALS AND METHODS Groups | [363.0, 756.0, 748.0, 824.0] | section_heading | 0.6 | ["unnumbered paragraph_title, inferred level section_heading: MATERIALS AND METHODS Groups"] | section_heading | 0.6 | body_zone | heading_like | none | True | True |
| 34 | 3 | 4 | footer | [364.0, 796.0, 459.0, 824.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | body_zone | body_like | empty | False | False | |
| 35 | 3 | 5 | text | We designed our experiments to compare electrically stimulated (ES) versus not stimulated (Control) cell groups. Each group included both BM- and AT-derived rat MSCs, cultivated in osteogenic differen | [362.0, 827.0, 1161.0, 977.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 36 | 3 | 6 | paragraph_title | Cell preparation and culture | [364.0, 991.0, 692.0, 1020.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Cell preparation and culture"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 37 | 3 | 7 | text | Sprague-Dawley (SD) rat MSC from bone marrow (RASMX-01001) and adipose tissue (RASMD-01001) were both obtained from Cyagen (CA, USA). Frozen vials of cells were thawed, cultured, and expanded to reach | [362.0, 1024.0, 1160.0, 1439.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 38 | 3 | 8 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [63.0, 1501.0, 496.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | reference_like | reference_pattern | False | False | |
| 39 | 3 | 9 | number | 3/15 | [1116.0, 1502.0, 1158.0, 1522.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 40 | 4 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 108.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
| 41 | 4 | 1 | image | [364.0, 176.0, 1154.0, 564.0] | figure_asset | 0.85 | ["media label: image"] | media_asset | 0.85 | body_zone | body_like | empty | True | True | |
| 42 | 4 | 2 | figure_title | Figure 1 Setup for delivering direct current electrical stimulation to the cells. L-shaped platinum electrodes, 22 mm apart, secured to the lid of a 6-well cell culture plate and connected to a standa | [373.0, 585.0, 1147.0, 675.0] | figure_caption | 0.92 | ["figure_title label: Figure 1 Setup for delivering direct current electrical stim"] | figure_caption | 0.92 | display_zone | legend_like | figure_number | True | True |
| 43 | 4 | 3 | paragraph_title | Electrical stimulation of cells | [363.0, 702.0, 703.0, 728.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Electrical stimulation of cells"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 44 | 4 | 4 | text | Electrical stimulation was applied by means of a purpose built DC ES cell culture chamber (Mobini, Leppik & Barker, 2016). Briefly, the chamber consists of L-shaped platinum electrodes, separated by a | [360.0, 733.0, 1161.0, 1033.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 45 | 4 | 5 | paragraph_title | Cell viability and activity | [363.0, 1048.0, 652.0, 1076.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Cell viability and activity"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 46 | 4 | 6 | text | To confirm that the oxidation–reduction and electrochemical reactions of the metallic electrodes in the DC ES chamber were not cytotoxic, cell viability and metabolic activity were assessed by 3-(4,5- | [360.0, 1081.0, 1161.0, 1379.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 47 | 4 | 7 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [64.0, 1501.0, 496.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | reference_like | reference_pattern | False | False | |
| 48 | 4 | 8 | number | 4/15 | [1117.0, 1502.0, 1158.0, 1522.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 49 | 5 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 107.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
| 50 | 5 | 1 | paragraph_title | Osteogenic differentiation | [362.0, 165.0, 669.0, 192.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Osteogenic differentiation"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 51 | 5 | 2 | text | Alizarin Red stains calcium deposits in the cells, indicating the presence of functional osteocytes. Cultured cells were washed twice with PBS and fixed with 4% paraformaldehyde (Sigma Aldrich, Münche | [361.0, 197.0, 1161.0, 403.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 52 | 5 | 3 | text | Transcription quantitative Polymerase Chain Reaction (RT-qPCR) technique. In brief, total RNA was isolated using an Aurum RNA isolation kit (BioRad, München, Germany) according to the manufacturer's i | [360.0, 417.0, 1159.0, 1151.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 53 | 5 | 4 | paragraph_title | Data analysis | [364.0, 1169.0, 525.0, 1196.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Data analysis"] | subsection_heading | 0.6 | body_zone | heading_like | short_fragment | True | True |
| 54 | 5 | 5 | text | All experiments were performed in triplicate and statistical significance of differences between groups was analyzed by one-way ANOVA and student t-test using GraphPad Prism (GraphPad Software Inc, La | [362.0, 1200.0, 1158.0, 1410.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 55 | 5 | 6 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [63.0, 1501.0, 496.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | reference_like | reference_pattern | False | False | |
| 56 | 5 | 7 | number | 5/15 | [1117.0, 1502.0, 1158.0, 1522.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 57 | 6 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 107.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
| 58 | 6 | 1 | image | [366.0, 170.0, 1153.0, 859.0] | figure_asset | 0.85 | ["media label: image"] | media_asset | 0.85 | body_zone | body_like | empty | True | True | |
| 59 | 6 | 2 | figure_title | Figure 2 Calcium deposition. Calcium deposition stained using Alizarin Red S for; (A) BM-MSCs and AT-MSCs exposed to no electrical stimulation (controls) at days 7 and 14; (B) BM-MSCs and AT-MSCs expo | [373.0, 882.0, 1149.0, 1019.0] | figure_caption | 0.92 | ["figure_title label: Figure 2 Calcium deposition. Calcium deposition stained usin"] | figure_caption | 0.92 | display_zone | legend_like | figure_number | True | True |
| 60 | 6 | 3 | text | in growth medium at day 0). Standard deviation (SD) was calculated with the $ \Delta C_{q} $ value of technical triplicates. | [362.0, 1049.0, 1154.0, 1107.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 61 | 6 | 4 | paragraph_title | RESULTS Electrical stimulation optimization | [363.0, 1135.0, 760.0, 1204.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: RESULTS Electrical stimulation optimization"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 62 | 6 | 5 | footer | [363.0, 1175.0, 760.0, 1204.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | body_zone | body_like | empty | False | False | |
| 63 | 6 | 6 | text | In order to optimize the electrical stimulation regime, first we exposed cells in culture to 10, 50, 100, and 200 mV/mm of DC ES for 1 h and found that 200 mV/mm caused cell lysis due to electro-chemi | [362.0, 1208.0, 1158.0, 1387.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 64 | 6 | 7 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [64.0, 1501.0, 495.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | reference_like | reference_pattern | False | False | |
| 65 | 6 | 8 | number | 6/15 | [1117.0, 1502.0, 1158.0, 1523.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 66 | 7 | 0 | header | PeerJ | [61.0, 70.0, 156.0, 108.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
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| 68 | 7 | 2 | figure_title | Figure 3 Cell viability. Measured by MTT assay, compared between electrically stimulated and non-stimulated controls. No significant difference in cell viability was detected between ES and non-stimul | [373.0, 749.0, 1147.0, 840.0] | figure_caption | 0.92 | ["figure_title label: Figure 3 Cell viability. Measured by MTT assay, compared bet"] | figure_caption | 0.92 | display_zone | legend_like | figure_number | True | True |
| 69 | 7 | 3 | paragraph_title | Cell viability and activity | [363.0, 870.0, 651.0, 899.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Cell viability and activity"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 70 | 7 | 4 | text | MTT assay was performed to compare viability and activity of electrically stimulated cells vs. non-stimulated controls. None of the cells exposed to 10, 50 and 100 mV/mm showed signs of toxicity. Figu | [360.0, 903.0, 1155.0, 1170.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 71 | 7 | 5 | paragraph_title | Osteogenic differentiation | [363.0, 1187.0, 669.0, 1215.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Osteogenic differentiation"] | subsection_heading | 0.6 | body_zone | heading_like | none | True | True |
| 72 | 7 | 6 | text | The influence of electrical stimulation on osteogenic differentiation of rat AT- and BM-MSCs in culture were investigated after seven and 14 days and compared to controls. Figures 2A and 2B shows Aliz | [361.0, 1219.0, 1146.0, 1427.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 73 | 7 | 7 | footer | Mobini et al. (2017), PeerJ, DOI 10.7717/peerj.2821 | [63.0, 1501.0, 496.0, 1524.0] | noise | 0.9 | ["footer label"] | noise | 0.9 | reference_like | reference_pattern | False | False | |
| 74 | 7 | 8 | number | 7/15 | [1117.0, 1502.0, 1158.0, 1523.0] | noise | 0.9 | ["page number label"] | noise | 0.9 | body_zone | body_like | short_fragment | False | False |
| 75 | 8 | 0 | header | PeerJ | [61.0, 71.0, 156.0, 107.0] | noise | 0.9 | ["header label"] | noise | 0.9 | body_zone | unknown_like | short_fragment | False | False |
| 76 | 8 | 1 | text | (10 and 50 mV/mm) electrical fields, was not significant. However, initial morphological changes in both cell types were present at day 7, in cells exposed to electrical field of 50 mV/mm (Figs. 2C an | [362.0, 167.0, 1153.0, 252.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 77 | 8 | 2 | text | Osteogenic phenotype gene expression was investigated by means of RT-qPCR analysis, in both ES and control groups of AT-MSCs and BM-MSCs at three, seven, and 14 days, (Fig. 4). In both BM- and AT-MSCs | [361.0, 256.0, 1161.0, 608.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 78 | 8 | 3 | paragraph_title | DISCUSSION | [364.0, 629.0, 546.0, 659.0] | section_heading | 0.9 | ["explicit scholarly heading: DISCUSSION"] | section_heading | 0.9 | body_zone | heading_like | canonical_section_name | True | True |
| 79 | 8 | 4 | text | Early studies exposing bone cells to DC electrical fields were in 1980s when Ferrier et al. (1986) exposed osteoblast-like cells to a 100 mV/mm electrical stimulation and observed cell migration towar | [361.0, 674.0, 1161.0, 1054.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 80 | 8 | 5 | text | With the aim of better understanding these DC ES induced changes in MSCs osteogenic differentiation behavior, we exposed rat BM-MSCs and AT-MSCs to 100 mV/mm 1 h/day DC ES for three, seven and 14 days | [362.0, 1057.0, 1161.0, 1378.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 81 | 8 | 6 | text | We showed that in the presence of DC ES, BM-MSCs and AT-MSCs behave differently as it relates to osteogenic marker expression. These observations could be related to | [362.0, 1382.0, 1159.0, 1438.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 85 | 9 | 1 | vision_footnote | No Electrical Stimulation Electrical Stimulation 100 mV/mm | [449.0, 168.0, 738.0, 219.0] | footnote | 0.7 | ["vision_footnote label: No Electrical Stimulation\nElectrical Stimulation 100 mV/mm"] | footnote | 0.7 | body_zone | unknown_like | none | True | True |
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| 93 | 9 | 9 | text | Figure 4 RT-qPCR results. Temporal changes in messenger RNA (mRNA) of (A) Runx2, (B) Osteopontin, (C) Collagen Type1 (Col1A2) in BM-MSCs; (D) Runx2, (E) Osteopontin and (F) Col1A2 in AT-MSCs, in both | [373.0, 1101.0, 1143.0, 1258.0] | figure_caption | 0.9 | ["figure prefix matched: Figure 4 RT-qPCR results. Temporal changes in messenger RNA ", "long text, reduced confidence", "near figure media assets"] | figure_caption | 0.9 | display_zone | legend_like | figure_number | True | True |
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| 97 | 10 | 1 | text | the known differences in osteogenic differentiation capacity between BM- and AT-derived MSC. Namely, studies that suggest AT-MSCs have less osteogenic potential than BM-MSCs (Ratanavaraporn et al., 20 | [361.0, 167.0, 1162.0, 313.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 98 | 10 | 2 | text | Our results indicate that in control groups (osteogenic supplemented medium, without electrical stimulation), both in BM- and AT-MSCs, only a slight difference exists in temporal expression patterns o | [362.0, 317.0, 1161.0, 462.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 99 | 10 | 3 | text | Runx2 is known as a master osteogenic transcription factor. Runx2 activates and regulates osteogenesis as the targeted gene of many signaling pathways, including transforming growth factor-beta 1 (TGF | [361.0, 465.0, 1161.0, 914.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 101 | 10 | 5 | text | We have demonstrated that DC ES promotes Runx2, Osteopontin and Col1A2 expression in BM-MSCs already at 7 days. Our results indicate that DC ES effects osteogenic gene expression, in both BM- and AT-M | [361.0, 983.0, 1158.0, 1192.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 104 | 10 | 8 | text | The work described herein was supported in part by a grant from the AO Foundation (#S-14-03H) and from the Friedrichsheim Foundation (Stiftung Friedrichsheim) in Frankfurt/Main, Germany. The funders h | [362.0, 1319.0, 1149.0, 1439.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 109 | 11 | 2 | text | The following grant information was disclosed by the authors: AO Foundation: #S-14-03H. Friedrichsheim Foundation. | [363.0, 197.0, 917.0, 280.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 111 | 11 | 4 | text | The authors declare there are no competing interests. | [363.0, 336.0, 838.0, 361.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 113 | 11 | 6 | text | ● Sahba Mobini and Liudmila Leppik conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper. | [364.0, 413.0, 1158.0, 497.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 114 | 11 | 7 | text | - Vishnu Thottakkattumana Parameswaran performed the experiments, prepared figures and/or tables. | [364.0, 502.0, 1157.0, 556.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 115 | 11 | 8 | text | ● John Howard Barker contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper. | [365.0, 563.0, 1138.0, 618.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
| 116 | 11 | 9 | paragraph_title | Data Availability | [365.0, 637.0, 556.0, 665.0] | subsection_heading | 0.6 | ["unnumbered paragraph_title, inferred level subsection_heading: Data Availability"] | subsection_heading | 0.6 | body_zone | heading_like | short_fragment | True | True |
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| 118 | 11 | 11 | text | The raw data has been supplied as Supplementary Files. | [388.0, 701.0, 884.0, 726.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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| 120 | 11 | 13 | text | Supplemental information for this article can be found online at http://dx.doi.org/10.7717/peerj.2821#supplemental-information. | [363.0, 778.0, 1158.0, 835.0] | body_paragraph | 0.6 | ["default body_paragraph for text label"] | body_paragraph | 0.6 | body_zone | body_like | none | True | True |
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