FIG. 3.

Adhesion of P. c. chabaudi AS-infected erythrocytes to rat endothelial cells depends on parasite age. Endothelial cells were treated with 100 U of IFN-γ ml⁻¹ and then exposed to an erythrocyte suspension containing erythrocytes (IE) infected with mature parasites (25% ± 3% parasitemia) or immature parasites (27% ± 2% parasitemia), and uninfected erythrocytes (E). Relative adhesion is the number of bound erythrocytes per 100 endothelial cells. The error bars indicate standard deviations.