title: Mycoplasmas: demonstration in semen and preputial washings from bulls.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D000818:Animals; D002417:Cattle / Q000382:microbiology*; D008297:Male; D009174:Mycoplasma / Q000187:drug effects / Q000302:isolation & purification*; D010400:Penicillin G / Q000494:pharmacology; D012661:Semen / Q000382:microbiology*
chemical_list: D000667:Ampicillin; D010400:Penicillin G