Table 2.

Neutralization of pseudotyped vectors by incubation with anti-HIV-1 serum

Serum*	Titer, cfu/ml†
None	1  ×  103
Normal donor	5  ×  102
HIV-1-infected donor	<1
None‡	3  ×  104
Hybridoma H902 supernatant‡	1  ×  103

^*Supernatants of TELCeB6 cells transiently transfected with plasmid pTr712 were harvested and incubated in the presence or absence of respective sera for 1 hr at room temperaature. 

† Titration was performed in HeLa-CD4⁺ cells. 

‡ Pseudotyped vectors were derived from the cell clone TELCeB6/pTr712-9.