the 2.6-megadalton ( mda ) cryptic plasmid and the 4.4-mda beta-lactamase plasmid of neisseria gonorrhoeae were radiolabeled with [ 32p ] nucleotides and used as probes for direct detection of gonococci and beta-lactamase plasmids in urethral exudates from men with urethritis .
C0041967
urethral
C0041976
urethritis