• 作者： 崔文慧; 黃仲嘉
• 作者服務機構： 私立輔仁大學生物學系; 國立臺灣大學動物學系
• 中文摘要： 用光學顯微鏡觀察幼齡和成熟前雄赤腹松鼠，以及性腺功能期、退化期、和復元期成熟雄體的睪丸、副睪和前列腺組織切片。幼松鼠精細管未具管腔，僅見原始生殖細胞及營養細胞，副睪管壁具方形或柱形單層上皮，外披平滑肌細胞。前列腺分為小葉，葉間富造纖細胞。葉內腺細胞聚集成索狀，未具管系。性成熟前，精細管具管腔，生殖上皮有絲分裂活躍，初級生殖細胞聚集，管外來狄氏細胞已能確辨。副睪管徑增大管外肌層變薄。前列腺細胞索分支增生，收集管具雛形。性功能期減數分裂旺盛，管內多精子。副睪管內充塞精子。前列腺分泌旺盛。退化期減數分裂中止，生殖細胞壞死脫落管腔。副睪管中精子消失。前列腺萎縮，葉間組織多纖維。復元期精細管、副睪及前列腺組織類似成熟前松鼠，僅副睪管壁肌肉層轉厚，前列腺間葉多纖維。
• 英文摘要： The male reproductive glands of the red-bellied tree squirrel, Callosciurus erythraeus, in the infantile,and prepubertal males, as well as sexually functional, degenerating and redeveloping adults were studiedhistologically. In the infant, testes, are characterized with solid seminiferous tubules filled with primordial germcells and Sertoli cells. Interstitial cells are sparse. The prostate is composed of condensed cell cords group-ed into lobules dispersed with interlobular tissues rich in fibroblasts. In the epididymis the highly convolut-ed tubule is lined with a simple cuboidal or columnar epithelium and thin smooth musculature without. In the prepubertal male, germ cells are engaged actively in mitosis. Primary spermatocytes are readi-ly recognized. Leydig cells appear in groups in the interstitial tissue. In the prostate, cell cords becomehighly branched and collecting tubules make their appearance. The tubules in the epididymis are enlargedin diameter but their peripheral musculature becomes thinner. In functional males, meiosis is active and bundles of spermatozoa are scattered along the centrallumen. Leydig cells have their cytoplasm highly enriched. The prostate is in the secretory phase. Thetubule in the epididymis is filled with sperm. In the degenerating adult, meiosis is interrupted and necrotic germ cells are detached from germinalepithelium. In the prostate, secretory and collecting ducts are eventually reduced to condensed lobulesseparated by interlobular fibrous tissue. The tubule in the epididymis often fills with necrotic germ cellsbut no sperm. In the redeveloping adult, the histology of the testes, prostate and epididymis is similar to that ofthe prepubertal male. However, there is more fibrous tissue in the interlobular septa in the prostate glandand thick musculature at the periphery of the tubule in the epididymis.
• 中文關鍵字： red-bellied squirrel; histology; male reproductive glands.
• 英文關鍵字： --