A pasture trial using 2 immunizing doses of a parasitic bronchitis vaccine.
D000818:Animals; D001991:Bronchitis / Q000662:veterinary*; D002417:Cattle; D002418:Cattle Diseases; D007114:Immunization; D010272:Parasitic Diseases / Q000662:veterinary*; D010273:Parasitic Diseases, Animal; D014612:Vaccines
D014612:Vaccines
BRONCHITIS/veterinary; CATTLE/diseases; PARASITIC DISEASES/veterinary