1. Gonococci in urethral exudates possess a virulence factor lost on subculture;Ward;Nature,1970
2. Gonococci in vivo and in vitro: studies of the host and bacterial determinants of gonococcal resistance to killing by human serum and by phagocytes;Parsons,1985
3. Red blood cells, a source of factors which induce Neisseria gonorrhoeae to resistance to complement mediated killing by human serum;Patel;J Gen Microbiol,1984
4. White blood cells including polymorphonuclear phagocytes contain a factor which induces gonococcal resistance to complement mediated serum killing;Patel;FEMS Microbiol Lett,1988
5. Cytidine 5′-monophospho-N-acetylneuraminic acid or a related compound is the low-Mr factor from human red blood cells which induces gonococcal resistance to killing by human serum;Nairn;J Gen Microbiol,1988