A survey of abomasal and duodenal nematodes in cattle in Hokkaido, Japan.
D000018:Abomasum / Q000469:parasitology*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000469:parasitology*; D004378:Duodenal Diseases / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D005260:Female; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D007564:Japan; D008297:Male; D009349:Nematode Infections / Q000453:epidemiology / Q000662:veterinary*