Resistance of Neisseria gonorrhoeae to Phagocytosis: Relationship to Colonial Morphology and Surface Pili

phagocytosis. Rabbit antiserum to type 2 gonococcal colonies enhanced phagocytosis of gonococci derived from virulent colonial types. These results demonstrate that the surfaces of colonial types 1 and 2 of N. gonorrhoeae have antiphagocytic properties and suggest that these properties may be associated with surface pili.