title: The transport of spermatozoa in spayed ewes: a comparison of two methods of steroid administration.
mesh_terms: D000818:Animals; D002369:Castration; D002465:Cell Movement / Q000187:drug effects; D002584:Cervix Uteri / Q000187:drug effects; D004967:Estrogens / Q000008:administration & dosage*; D005260:Female; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D008297:Male; D011374:Progesterone / Q000008:administration & dosage*; D012756:Sheep; D013094:Spermatozoa / Q000187:drug effects*; D014599:Uterus / Q000187:drug effects; D014621:Vagina / Q000187:drug effects
chemical_list: D004967:Estrogens; D011374:Progesterone