title: Investigation of nasal microflora of feedlot calves before and after weaning.
mesh_terms: D000818:Animals; D002417:Cattle; D003168:Complement Fixation Tests; D004926:Escherichia coli / Q000302:isolation & purification*; D005455:Fluorescent Antibody Technique; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D009174:Mycoplasma / Q000302:isolation & purification*; D009666:Nose / Q000382:microbiology*; D009975:Orthomyxoviridae / Q000302:isolation & purification*; D010325:Pasteurella / Q000302:isolation & purification*