Fig. 9.

Immunostaining and quantification of KIT⁺PCNA⁺ cells in porcine testis sections. A KIT and PCNA immunostaining of porcine testis sections at each age. Arrows and arrowheads point to KIT⁺PCNA⁺ and KIT⁺PCNA⁻ cells, respectively. Bar = 10 μm. B The upper panels: the numbers of KIT⁺PCNA⁺ cells per cross-section of seminiferous cords/tubules in porcine testes at each age. The lower panels: the ratios of KIT⁺PCNA⁺ to SOX9⁺ cells per cross-section of seminiferous cords/tubules 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)