title: Photoperiodic regulation of ovine spermatogenesis: relationship to serum hormones.
mesh_terms: D000818:Animals; D004847:Epithelial Cells; D005640:Follicle Stimulating Hormone / Q000097:blood; D006728:Hormones / Q000097:blood*; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D010507:Periodicity; D011388:Prolactin / Q000097:blood; D012611:Scrotum / Q000033:anatomy & histology; D012671:Seminiferous Tubules / Q000166:cytology; D012756:Sheep; D013091:Spermatogenesis; D013737:Testis / Q000166:cytology; D013739:Testosterone / Q000097:blood
chemical_list: D006728:Hormones; D013739:Testosterone; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone