Median surface fluorescence of RBCs.

The RBCs were stained for (A) IgG, (B) CR1, (C) CD55, and (D) CD59. RBCs were obtained upon enrollment from cases of severe anemia (SA), symptomatic controls (SC), and asymptomatic controls (AC). Data are presented as box plots with whiskers and outliers. The box represents the interquartile range that contains 50% of values, and the whiskers are lines that extend from the box to the highest and lowest values, excluding outliers. Outliers are cases with values between 1.5 and 3 box lengths from the upper or lower edge of the box. Lines across the box indicate the mean and median.