Fig. 1.
Retroviral vectors in this study. HGMDR: Harvey murine sarcoma virus backbone, human IL2RG cDNA, IRES, humanMDR1 cDNA. MGNEO: Moloney murine leukemia virus backbone, humanIL2RG cDNA, IRES, NEO. Selected restriction sites used for construction and analysis of HGMDR are indicated. Arrows represent PCR primers used to detect proviral DNA segments of indicated size.