Figure 4

Light microscopy analysis of the post-transplanted donor hearts at 90 minutes.
(A) Hematoxylin and eosin staining (a: PC, b: CO24h, c: CO48h, d: UW24h) and TdT mediated dUTP nick end labeling (e: PC, f: CO24h, g: CO48h, h: UW24h). (B) Quantitation of the number of TUNEL-positive cells. Data from each group are expressed as the means ± standard deviations. P < 0.05 was considered statistically significant. n.s.: not significant, *P < 0.01, **P < 0.05, White bar = 250 μm, Black bar = 50 μm.