Dynamics of parasite populations during pregnancy. Two kinds of patterns (A and B) are described. P1, P2 represent positive parasitaemia from peripheral blood collected during the pregnancy, Pla represents placental blood collected at delivery. msp2/microsatellites genotypes are represented by squares. For one pattern, the various colors of the square represent a distinct msp2/microsatellite genotype. The different DBL5ε+Id5 sequence types are represented by different colored circles.