Figure 4. Mean CD8⁺ and CD4⁺ T cell Concentrations of the Four Immunotherapy Groups during Step II.

(A) CD8⁺ T cells.

(B) CD4⁺ T cells.

Blue diamonds = group A, placebo; red squares = group B, vaccine; green triangles = group C, IL-2; black circles = group D, IL-2 + vaccine. Brackets depict SEM.