The Cell-surface Antigens of Bacteroides vulgatus

Abstract
The cell surface of B. vulgatus was examined by EM. The outer membrane complex was removed by EDTA and mild sonication and the antigens of this complex were characterized by enzyme-linked immunosorbent assay and crossed immunoelectrophoresis. The species-specific antigen was identified and was shown to be the major outer membrane protein with a MW of 100,000.