title: O-serogrouping scheme for mesophilic Aeromonas strains.
abstract: The O-antigens of 307 strains of mesophilic Aeromonas including 227 A. hydrophila and 80 A. caviae were studied and 44 O-serogroups defined among them. The presence of heat-labile masked antigen, which inhibits O-agglutination, was observed in some strains. As all the O-antisera prepared with these mesophilic Aeromonas strains contained some R-antibody, all diagnostic O-antisera must be absorbed with R-organisms before use. Some of the O-antigens were found to be identical or closely related to those of certain serovars of Vibrio cholerae, Vibrio fluvialis or Plesiomonas shigelloides.
mesh_terms: D000333:Aeromonas / Q000145:classification* / Q000276:immunology; D000372:Agglutination Tests; D000942:Antigens, Bacterial / Q000276:immunology*; D012703:Serotyping; D013045:Species Specificity
chemical_list: D000942:Antigens, Bacterial