serum-susceptible ( ss ) neisseria gonorrhoeae were induced to resistance ( sr ) to complement-mediated killing by fresh human serum ( fhs ) by a small-mr factor ( s ) from guinea-pig blood in 3 h at 37 degrees c , but not in the presence of bacteriostatic concentrations of chloramphenicol or neomycin , indicating that proteins mediated the acquisition of resistance .
C0009498
complement
C0229671
serum