Schematic drawing of human seminiferous epithelium. This drawing shows the relationship of the Sertoli cells to the spermatogenic cells. The seminiferous epithelium rests on a basal lamina, and a layer of peritubular cells surrounds the seminiferous tubule. The spermatogo-nia-type A pale, type A dark, and type B pale-and preleptotene spermatocytes are located in the basal compartment of the seminiferous type B pale spermatogonium late spermatid early spermatid pachytene primary spermatocyte junctional complex basal lamina type A dark cell spermatogonium spermatogonium
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