TY - RPRT TI - A third-generation lentivirus vector with a conditional packaging system. AU - T Dull AU - R Zufferey AU - M Kelly AU - R J Mandel AU - M Nguyen AU - D Trono AU - L Naldini PY - 1998 DO - 10.1128/jvi.72.11.8463-8471.1998 UR - https://pubmed.ncbi.nlm.nih.gov/9765382/ ID - 9765382 ER -