FIG. 1.

Effect of sera on the cytoadhesion of RP5 to human syncytiotrophoblast. The ability of RP5 to bind to the human syncytiotrophoblast was tested after parasites were supplemented with CSA (1 mg/ml), after the trophoblast was incubated with 84H10 (a monoclonal antibody against ICAM-1), or after parasites were incubated with RP5-agglutinating sera and RP5-nonagglutinating sera (for details see Materials and Methods). Each point represents one measure.