Fig. 3From: Melatonin in cryopreservation media improves transplantation efficiency of frozen–thawed spermatogonial stem cells into testes of azoospermic miceImmunocytochemistry was used for evaluation BAX and BCL2 markers (green) in different groups (freeze, freeze + Mel and fresh) of SSCs before transplantation into recipient testes. The nuclei were stained with DAPI dye (blue). Scale bars = 20 μm (a, c). The graph depicts the quantitative analysis for the immunocytochemistry results (b, d). The results are presented as mean ± SD. Significance is indicated by **p < 0.01; *p < 0.05Back to article page