Table I.

Frequency of naive and memory CD3⁺CD8⁺ T cells in PBMC of SHIV-immunized rhesus macaques after i.v. pathogenic SIVmac239 challenge

Animal	Weeks PC	N Plus CM (%)a	IM (%)b	EM (%)c
34569 Pd	4	19.8	23.1	54.0
	7	30.3	14.8	49.5
	12	37.9	14.2	47.1
32212 Pd	4	23.9	23.9	49.3
	7	28.4	27.1	37.6
	12	36.3	14.5	44.2
32273 Ue	4	23.6	32.6	43.0
	7	14.5	22.6	56.7
	12	33.5	26.2	39.5
30706 Ue	4	22.7	38.6	37.8
	7	8.96	40.2	42.6
	12	19.5	35.9	43.1

^aNaive (N) and CM CD3⁺CD8⁺ T cells (percentage of CD28⁺CCR7⁺).

^bIntermediate memory (IM) CD3⁺CD8⁺ T cells (percentage of CD28⁺CCR7⁻).

^cEM CD3⁺CD8⁺ T cells (percentage of CD28⁺CCR7⁻).

^dProtected.

^eUnprotected.