Source:http://linkedlifedata.com/resource/umls/id/C0004641
MSH: Substances elaborated by specific strains of bacteria that are lethal against other strains of the same or related species. They are protein or lipopolysaccharide-protein complexes used in taxonomy studies of bacteria.,CSP: substances elaborated by specific strains of bacteria that are lethal against other strains of the same or related species; protein or lipopolysaccharide-protein complexes used in taxonomy studies of bacteria.