Invasion of SAO RBCs in culture by parasite isolates obtained from SAO individuals. (A) Schematic representation of the experimental procedure used. (B) Invasion of normal (continuous lines) or SAO (discontinuous lines) RBCs by 3 independent isolates obtained from SAO individuals. ▴, •, and ⋄ correspond to the 3 different isolates. Time zero corresponds to the time point at which cultures were diluted 1:5 with either normal or SAO RBCs.