Immunization of calves against the nodular worm, Oesophagostomum radiatum.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D007114:Immunization / Q000662:veterinary*; D007814:Larva; D008297:Male; D009814:Oesophagostomiasis / Q000517:prevention & control / Q000662:veterinary*; D009815:Oesophagostomum; D014020:Tissue Extracts / Q000008:administration & dosage
D014020:Tissue Extracts