TABLE 3.

Impact of CD8⁺ T cells on control of P. carinii in P. carinii-inoculated mice with CD4⁺ T cells depleted or CD4⁺ and CD8⁺ T cells depleted

Weeks postinfection	No. of P. carinii organisms/mouse
	CD4+-T-cell-depleted mice	CD4+- and CD8+-T-cell-depleted mice
3	7.10 × 106 ± 7.71 × 105 (6)a	4.42 × 106 ± 3.25 × 105 (6)
4	8.41 × 106 ± 7.83 × 105 (6)	6.27 × 106 ± 8.42 × 105 (6)
6	1.73 × 107 ± 6.95 × 106 (6)	6.82 × 106 ± 1.16 × 106 (6)

^aP = 0.01 for a comparison of CD4⁺-T-cell-depleted mice and CD4⁺- and CD8⁺-T-cell-depleted mice. Numbers in parentheses indicate the number of mice per group.