TABLE 3.

Infection of various cell types with HIV-GFP/SIVpack/G and LNCX-GFP/Ψ(−)env(−)ampho/G^a

Target cells	% of GFP-positive cells after exposure to:
	HIV-GFP/ SIVpack/G	LNCX-GFP/Ψ(−) env(−)ampho/G
CEMX174	11	ND
Primary human macrophages	15	<0.1
Primary mouse neurons	15	<0.1

^aThe indicated cells were exposed to HIV-GFP/SIVpack/G and LNCX-GFP/Ψ(−)env(−)ampho/G at an MOI of 1.0, chosen based on vector titrations on HeLa cells. Except for mouse neurons, cells were infected in the presence of Polybrene at 10 μg/ml. At 48 or 72 h postinfection, fluorescent cells were visually counted under a microscope. Mock infections of the same cell types were performed in parallel and resulted in no detectable fluorescent cells. ND, not determined.