Fig. 2From: Variation in the immune responses against Plasmodium falciparum merozoite surface protein-1 and apical membrane antigen-1 in children residing in the different epidemiological strata of malaria in CameroonVariation of antibody level by age in the study population. The line shows the LOESS smoothed estimate of the geometric mean. Evidence show that antibody level increases with increasing age adjusting for gender and study site (p < 0.0001)Back to article page