title: Retention of progestogen sponges in ewes.
authors.forename: T A
authors.initials: TA
authors.lastname: Porter
authors.forename: M
authors.initials: M
authors.lastname: Glover
mesh_terms: D000282:Administration, Intravaginal; D000818:Animals; D005260:Female; D011372:Progestins / Q000008:administration & dosage*; D012756:Sheep / Q000502:physiology*
chemical_list: D011372:Progestins