Figure 3.

Switched memory subsets are reduced in mice lacking T cells and CD40. Frequencies of switched memory cells, and the proportion of CD73⁺, CD80⁺ and CD273⁺ subsets in the spleens of B6 and TCR‐β ^−/− (TCRb^–) mice (a, b) and of BALB/c and CD40^−/− (CD40^–) mice (c, d). Data are shown as mean ± SEM of 8–12 mice from three or four experiments. *P ≤ 8·8 × 10⁻⁴.