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. 2019 Oct 24;10:1268. doi: 10.3389/fphar.2019.01268

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Copyright © 2019 Huang, Zhang, Qi, Shi, Song, Liu and Sun

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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Effect of neuropeptide Y (NPY) knockout on cardiomyocyte apoptosis in rats 3 days post-myocardial infarction. (A) Effects of NPY knockout on cardiac apoptosis were evaluated by terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling staining (nucleus stained in blue with 4’,6-diamidino-2-phenylindole and apoptotic cells stained in green). (B) The percentage of terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling-positive cell in different groups (n = 4, 100×). Scale bar = 100 μm. (C) The mRNA level of caspase-3 (n = 6). (D) Caspase-3 activity (n = 6). **P < 0.01 versus control, ^## P < 0.01 versus myocardial infarction.