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. 2021 Aug 16;8:718055. doi: 10.3389/fcvm.2021.718055

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Copyright © 2021 Feng, Zhao, Xu, Xing, Yang, Ma, Qi, Zhang and Gao.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Echocardiographic measurements and biomechanical tests of the effects of rGO/silk cardiac patches on the myocardial functional recovery of infarcted hearts of rats. (A) Echocardiography was performed at 4 weeks' post-implantation of patches. Quantification of parameters reflecting blood pumping function, including ejection fraction (B), fractional shortening (C), ratio of interventricular septum (IVS) thickening (D) and ratio of left ventricular posterior wall (LVPW) thickening (E) at 4 weeks after MI. Quantification of parameters reflecting ventricular remodeling, including left ventricular end-diastolic volume (F), end-systolic volume (G) and left ventricular mass (H). Young's modulus both in long axis (I) and short axis (J) were gauged by an BOSE Electro Force mechanical tester. Data are mean ± SEM from three independent experiments. ^*P < 0.05, ^**P < 0.01.