Fig. 3From: Sertoli cell and spermatogonial development in pigsImmunostaining and quantification of SOX9+ and PCNA+ cells in porcine testis sections. A SOX9 and PCNA immunostaining of porcine testis sections at each age. Arrows and arrowheads point to SOX9+PCNA+ and SOX9+PCNA− cells, respectively. Bar = 10 μm. B The numbers of SOX9+ and SOX9+PCNA+ cells per cross-section of seminiferous cords/tubules in porcine testes at each age. C The percentages of SOX9+ cells positive for PCNA in porcine testes at each age. Data are presented as the mean ± SEM of three littermates, with 50 round cord/tubule cross-sections analyzed per individual. Different letters indicate significant differences between groups (P < 0.05)Back to article page