TY - RPRT TI - Phage Trojan horses: a conditional expression system for lethal genes. AU - J Heitman AU - W Fulford AU - P Model PY - 1989 DO - 10.1016/0378-1119(89)90480-0 UR - https://pubmed.ncbi.nlm.nih.gov/2695397/ ID - 2695397 ER -