title: Gonococci in urethral exudates possess a virulence factor lost on subculture.
mesh_terms: D003165:Complement System Proteins; D004352:Drug Resistance, Microbial; D005122:Exudates and Transudates / Q000382:microbiology*; D006069:Gonorrhea / Q000382:microbiology*; D006801:Humans; D007106:Immune Sera / Q000494:pharmacology; D008297:Male; D009344:Neisseria gonorrhoeae / Q000302:isolation & purification / Q000472:pathogenicity*; D013307:Streptomycin; D014522:Urethral Diseases / Q000382:microbiology*; D014774:Virulence
chemical_list: D007106:Immune Sera; D003165:Complement System Proteins; D013307:Streptomycin