F»1 
wancer 
NEOF101 
Mo-hU.V 
5'LTR \mi CHAM 
-.ENHANCER 
SV40 CWI 
NEO^. 
♦ I 
IORI 
McHyU.V 3*LTR 
•«><* 
SV<X> 
MSV-TK 
MoTN 
HEO-fc 
N2 
♦ NEO 
SV40 
PROMOTER 
"■NJ- 
□ 
MLy NEO.I 
1 kb 
Fig. 1. Schematic diagram of the ttmcture of tix retroviral 
vectors used in this study. HSV, herpes simplex virus. 
PuftS M 'll. '<^sr 
;056 Genetics: Palmer et at. ^ 
LHL 
LHL2 
LSHL 
Fig. 1. Retroviral vectors. Arrows indicate promoters. SV40 
indicates the early-region enhancers and promoter of simian virus 40, 
(A)n indicates polyadenylylation signals, and SD and SA are splice 
donors and splice acceptors, respectively, kb, Kilobase. 
|196] 
Recombinant DNA Research. Volume 12 
