血骨 闻片细:≤ 女等相题 初级精母细 植原细胞 ⊙ 计:一子细胞 些2 2)Seminiferous tubule: /30-70cm \ long, 150 250um in D -specific stratified epithelium: spermatogenic epi (seminiferous epi spermatogenic cells ● Sertoli or supporting ce‖l 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