TY - RPRT TI - Method for the genetic labeling of cryptic plasmids. AU - M So AU - F Heffron AU - S Falkow PY - 1978 DO - 10.1128/jb.133.3.1520-1523.1978 UR - https://pubmed.ncbi.nlm.nih.gov/346579/ ID - 346579 ER -