Stage-specific immunolocalisation of ADAM10 in adult rat testes. (A) High and low (A’) power magnification of Pale (stage IX-XII), Weak (stage XIII-I) (B, B’), Strong (stage II-V) (C, C’) and Dark (VI-VIII) (D, D’) stages. The label was concentrated in the cytoplasm of elongating spermatids of Weak (stages XIII-I) segments (B, arrow). The negative control, without primary antibody, of the different segments are shown in A”, B”, C” and D”. Bars = 50 μm.