Table 2.

SIV_mac251 doses used in challenge experiments

Expt	No. of animals	SIV mac251 (TCID50)a	Treatment
1	8	6,100*	DNA/ALVAC/gp120
2	8	6,100	Alum
3	12	470*	DNA/ALVAC/gp120
4	12	470	Alum
5	11	120†	ALVAC/gp120
6	12	120	gp120
7	11	120	Alum
8	3	120
9	5	120	Ad5 h-GFP or empty/MPL-SE

^a*, SIV_mac251 propagated in human cells; †, SIV_mac251 propagated in macaque cells.