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Lipopolysaccharide (LPS) is a major component of the Neisseria meningitidis outer membrane. Here we report a patient with meningococcal meningitis of which the causative isolate lacked LPS. Thus far, no naturally occurring LPS-deficient meningococcal isolate has been known to cause clinical disease.We used SDS-PAGE, silver staining and LPS-specific antibodies in whole cell ELISA to determine LPS presence...
Outer membrane vesicles (OMVs) have been extensively investigated as meningococcal vaccine candidates. Among their major components are the opacity (Opa) proteins, a family of surface-exposed outer membrane proteins important for bacterial adherence and entry into host cells. Many Opa-dependent interactions are mediated through the carcinoembryonic antigen-related cell adhesion molecule (CEACAM) family...
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