TABLE 2.

Titers of HIV-1 lentiviral and MoMLV oncoretroviral vectors pseudotyped with chimeric JSRV envelopes^a

Env constructb	Lentiviral vector titer (AP+ FFU/ml) on indicated cell type:		Oncoretroviral vector titer (AP+ FFU/ml) on indicated cell type:
	HTX	SSF	HTX	SSF
JSRV Env	1.3 × 104	7.8 × 104	2.9 × 104	1.1 × 105
JSRV-HIV	7.7 × 103	4.7 × 104	1.7 × 102	1.3 × 104
JSRV-10A1	8.6 × 102	8.0 × 103	1.1 × 102	3.7 × 102
JSRV-10A1R−	1.3 × 103	7.0 × 103	2.4 × 103	9.2 × 103

^aThe experimental approaches used were the same as those described in Table 1 except that wild-type or nontransforming JSRV Env constructs were used for pseudotyping. The values shown are the means of the results of at least two experiments, and the variation in the results of the experiments was no more than 10%.

^bSee the legend to Fig. 1 for construct nomenclature.