Fig. 11.

Immunohistochemical detection of CCDC103 in paraffin sections of control seminiferous tubules obtained from men with conserved spermatogenesis that are under infertility treatments (a, b). Staining was weakly intense in spermatogonia (SG), intense in the cytoplasm and perinuclear region of primary spermatocytes (ST1) and secondary spermatocytes (ST2), and moderately intense in the cytoplasm and perinuclear region of Sertoli cells (SC) and round spermatids (Sa). c The midpiece of the elongated spermatids (Sd) showed intense staining (white arrowheads). PTC, peritubular cells; BL, basal lamina. Scale bars, 10 μm