Letter: Hydrallantois in Ayrshire cows.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D005321:Extraembryonic Membranes; D005122:Exudates and Transudates; D005260:Female; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications / Q000662:veterinary*