title: Observations on the role of viruses in pneumonia of calves.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D003371:Cough / Q000662:veterinary; D005334:Fever / Q000662:veterinary; D006385:Hemagglutination Inhibition Tests; D008168:Lung / Q000473:pathology; D018184:Paramyxoviridae Infections / Q000662:veterinary; D011014:Pneumonia / Q000382:microbiology / Q000662:veterinary*; D012088:Reoviridae Infections / Q000662:veterinary; D014780:Viruses / Q000472:pathogenicity*
chemical_list: D000914:Antibodies, Viral