title: Physical evidence of a plasmid in Neisseria gonorrhoeae.
mesh_terms: D000225:Adenine; D001431:Bacteriological Techniques; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D004269:DNA, Bacterial / Q000032:analysis* / Q000302:isolation & purification; D004270:DNA, Circular / Q000032:analysis / Q000302:isolation & purification; D004996:Ethidium; D005111:Extrachromosomal Inheritance; D009344:Neisseria gonorrhoeae / Q000032:analysis* / Q000254:growth & development; D012260:Ribonucleases; D012475:Salmonella / Q000032:analysis; D013936:Thymidine; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D002712:Chlorides; D004269:DNA, Bacterial; D004270:DNA, Circular; D014316:Tritium; D002586:Cesium; D012260:Ribonucleases; D004996:Ethidium; D000225:Adenine; D013936:Thymidine