TABLE 4.

Transduction of human lung airway epithelial cells by HIV-1 lentiviral and MoMLV oncoretroviral vectors bearing JSRV Env proteins^a

Env construct	Titer (AP+ FFU/ml) for indicated target cells:
	BEAS-2B		CF16
	Lentiviral vector	Oncoretroviral vector	Lentiviral vector	Oncoretroviral vector
JSRV Env	3.3 × 104	2.8 × 104	9.0 × 103	1.4 × 104
JSRV-HIV	1.8 × 104	4.0 × 102	7.2 × 103	2.9 × 102
JSRV-10A1	1.8 × 103	3.0 × 102	6.2 × 102	51
JSRV-10A1R−	3.8 × 103	2.9 × 103	6.1 × 103	4.5 × 102
VSV-G	5.9 × 104	1.5 × 106	8.8 × 103	1.2 × 105

^aExperimental approaches were the same as those described in Table 1. The titers on BEAS-2B human lung epithelial cells (43) and CF16 cells established from a CF patient (18) were determined and shown. The values shown are the means of the results of two independent experiments, with variations of no more than 10%.