TY - RPRT TI - Versatile suicide vectors which allow direct selection for gene replacement in gram-negative bacteria. AU - J Quandt AU - M F Hynes PY - 1993 DO - 10.1016/0378-1119(93)90611-6 UR - https://pubmed.ncbi.nlm.nih.gov/8486283/ ID - 8486283 ER -