title: 3 cases of persistent urachus with umbilical abscess in Wistar rats.
mesh_terms: D000818:Animals; D001835:Body Weight; D005260:Female; D008297:Male; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D012376:Rodent Diseases / Q000473:pathology*; D012744:Sex Ratio; D014496:Urachal Cyst / Q000473:pathology / Q000662:veterinary*; D014497:Urachus / Q000473:pathology*