Adhesion ofP falciparum–infected erythrocytes to CSA. CS2 parent and CS2ΔSBP1-infected erythrocytes were compared before and after panning and subsequent growth for adherence to CSA. Binding of 3D7-parasitized erythrocytes was included as a negative control. Data represents average ± standard deviation (n = 3). Numbers are expressed as the percentage of CS2 parental binding (bound erythrocyte/mm²). The mean number of bound infected erythrocytes per squared millimeter for CS2 parental binding was 1240 above bovine serum albumin control.