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Protection of XFZY against H/R-induced cardiomyocyte injury. Myocardial H9C2 cells were incubated with different concentrations of XFZY under hypoxia for 10 h and reoxygenated for 2 h. a After H/R, cells were observed under an optical microscope for morphological changes; b LDH released from H9C2 cells was assayed after H/R injury. The results were expressed as mean ± SD. ***p < 0.001 vs H/R group; ### p < 0.001 vs Vehicle group. Vehicle: normoxia; H/R: hypoxia/reoxygenation
