title: Studies on the interrelationships between vitamin A intake and Dictyocaulus viviparus infection in calves.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D004022:Dictyocaulus Infections / Q000662:veterinary*; D008174:Lung Diseases, Parasitic / Q000662:veterinary*; D008297:Male; D014801:Vitamin A / Q000627:therapeutic use*
chemical_list: D014801:Vitamin A