Table 1.

Retrotransposition in primary human fibroblasts and hepatocytes

A/RT virus amount used for infection, moi	Hepatocyte				Fibroblast
	Exp. 1		Exp. 2
	β-gal	EGFP	β-gal	EGFP	β-gal	EGFP
0	0	0.1	0	0.1	0	0.1
0.1	10	0.3	20	0.1	10	0.1
1	40	0.5	70	0.5	70	0.9
10	90	2.7	90	1.5	90	1.8

Cells (2 × 10⁵) were infected with various amounts of A/RT virus and assayed for EGFP and β-gal expression 7 days after infection.