--subdivision Infections under individual organs and regions of the body, and individual animals and groups of animals, e.g. Heart--Infections; Foot--Infections; Cattle--Infections; Fishes--Infections
--subdivision Microbiology under individual organs and regions of the body and under individual diseases, e.g. Heart--Microbiology; Foot--Microbiology; Tuberculosis--Microbiology
--subdivision Infections under individual animals and groups of animals, e.g. Cattle--Infections; Fishes--Infections; also subdivisions Microbiology and Germplasm resources--Microbiology under individual animals and groups of animals, e.g. Cattle--Microbiology; Fishes--Microbiology; Cattle--Germplasm resources--Microbiology; Fishes--Germplasm resources--Microbiology; and subdivision Pathogens under individual animals and groups of animals, e.g. Cattle--Pathogens; Fishes--Pathogens