title: Some observations on fertility of frozen ram semen.
mesh_terms: D000818:Animals; D005298:Fertility / Q000187:drug effects; D007315:Insemination, Artificial; D008297:Male; D011460:Prostaglandins F / Q000494:pharmacology; D012662:Semen Preservation; D012756:Sheep / Q000502:physiology*; D013094:Spermatozoa / Q000502:physiology; D013997:Time Factors
chemical_list: D011460:Prostaglandins F