title: Phase variation in the genus Serratia.
abstract: During an investigation of the serotypes of Serratia marcescens present in a cancer centre, it was found that 8.7% of 241 strains had more than one H antigen. There were 19 diphasic and two triphasic strains. Antigen H1 was a component of the phases in the approximately half of the strains with multiple phases. This is the first report of such phases in the genus Serratia.
mesh_terms: D000942:Antigens, Bacterial; D005407:Flagella / Q000276:immunology*; D012703:Serotyping; D012706:Serratia marcescens / Q000145:classification / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial