Fig. 1. Expression of CIT-K during testicular development. (A) Protein extracts from mouse wild-type tissues were probed by western blotting using anti-CIT-K (upper panel) or anti GAPDH (lower panel) antibodies. The samples were cerebellum at P4 (1), testis at P4 (2) and P40 (3), ovary at P4 (4). (B-C) Sections from mouse wild-type testes at P4 (B) and P40 (C) were analyzed by immunohistochemistry with affinity-purified anti-Citron antibodies. Bars, 50 µm.