Existence of a merozoite surface protein complex in P. falciparum asexual blood stages. (A) ELISA binding analysis, confirming concentration-dependent interaction of rMSP3N with rMSP165, rMSP7C, and rMSP6C while rRAP2, rSERA5, and rMLH did not show any binding to rMSP3N even at the highest concentrations (Conc). Bars represent the SEM, calculated from two sets of experiments. (B) SPR analysis showing interaction between rMSP3N and rMSP165 and between rMSP7C and rMSP6C. Kd is the dissociation constant representing the measure of affinities.