是骨 辨 间赎细 路" 数女初级母细想 M原细胞 ∷公精子朝慰 2)Seminiferous tubule: /30-70cm\long,150 250um in d specific stratified epithelium: spermatogenic epi ( seminiferous epi) e spermatogenic cells e Sertoli or supporting cell e myoid cell: under basal lamina2) Seminiferous tubule: 30-70cm long, 150- 250um in D ---specific stratified epithelium: spermatogenic epi.(seminiferous epi) spermatogenic cells Sertoli or supporting cell myoid cell: under basal lamina