According to the International Code of Nomenclature of Bacteria ("The Bacteriological Code", revision of 1990) and the International Committee on Systematics of Procaryotes (ICSP), bacteria of veterinary interest are divided into 8 phyla:- | According to the International Code of Nomenclature of Bacteria ("The Bacteriological Code", revision of 1990) and the International Committee on Systematics of Procaryotes (ICSP), bacteria of veterinary interest are divided into 8 phyla:- |