Fig. 3

Spermatogenic ex vivo progression from 6.5 dpp testes (a) and 10.5 dpp testes (b) compared to the natural in vivo situation. Each column pair represents, to the left each sample’s different germ cell type proportion along the culture period. To the right is shown the in vivo germ cell proportion corresponding to the equivalent cultured explant age. The in vivo data are derived from Bellve et al., (1977)