Figure 8.

Histology of the brain from DBA/2 mice treated with IL-2 and given infection with P. yoelii (strain 17XL). Sections of brain vessel (original magnification, 40 × 1.6) from normal mouse (A); from mouse that received no treatment but was infected for 6 days (B); from mouse receiving treatment only (C); from treated and infected mouse at day 6 after infection (D) showing presence of several parasitized erythrocytes in the vessel (dark-bordered arrow), infiltration of lymphocytes (one-side dark arrow), endothelial cell activation with enlarged nuclei (dark arrow) and areas of vessel disruption (clear arrow).