Table 1. Percentage of GFP (+) cells at time of transplantation.

	Mice (n)	GFP (%)
Vector	5	72
MN1	6	14
Δ12–228	4	18
	4	22
Δ18–458	2	41
	6	22
Δ570–1273	7	39
Δ570–950	5	53
Δ570–1010	5	52
MN1 *	10	50
Δ1260–1320 *	10	51
Other MN1 mutants #	4–12	10–20

^*Experiment shown in figure 4A.

^#Experiments shown in figure 5B.