title: Studies of the antigenic structure of the Bacteroides fragilis species.
abstract: The authors describe the new antigenic fraction E3 within the Bacteroides fragilis species and report results obtained with E antisera in immunofluorescence tests.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis*; D001441:Bacteroides fragilis / Q000276:immunology*; D005455:Fluorescent Antibody Technique
chemical_list: D000942:Antigens, Bacterial