Table 1.

Experimental scheme to measure the effect of CD8 T cell on protection of SB-1, HVT, and SB-1+HVT vaccines.

Group	Vaccine	CD8 Depletion	Challenge (5 DPV)	Number of Chickens
1	Unvaccinated	No	No	17
2	Unvaccinated	No	1000 PFU of Md5	17
3	SB-1	No		17
4	HVT	No		17
5	SB-1+HVT	No		17
6	Unvaccinated	Yes	No	17
7	Unvaccinated	Yes	1000 PFU of Md5	17
8	SB-1	Yes		17
9	HVT	Yes		17
10	SB-1+HVT	Yes		17
Total number of chickens				170