title: Seasonal variation in the histology of the testis of the red deer, Cervus elaphus.
abstract: A histological study of the testes of stags shot in autumn (sexual season) and spring (quiescent period) indicated that the 3-fold increase in testicular size observed in the autumn was accompanied by increases in nearly all features studied (volumes of intertubular tissue, Leydig cells, blood vessels and peritubular cells; diameter and length of seminiferous tubules; the number of A1 spermatogonia and products of spermatogonial divisions, meiosis and spermiogenesis). There were, however, fewer A0 spermatogonia in the testes in autumn.
mesh_terms: D000818:Animals; D002452:Cell Count; D003670:Deer / Q000033:anatomy & histology* / Q000378:metabolism; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D009929:Organ Size; D012621:Seasons; D013091:Spermatogenesis; D013737:Testis / Q000166:cytology* / Q000378:metabolism; D013739:Testosterone / Q000378:metabolism
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone