The effect of UK-112,214 treatment on Plasmodium falciparum Pf3D70087/N9 in vivo at (A) Day 5 and (B) Day 7. Photomicrographs of peripheral blood smears stained with Giemsa. Lower panels show flow cytometry dot plots from samples of peripheral blood stained with TER-119-Phycoerythrine (marker of murine erythrocytes) and SYTO-16 (nucleic acid dye). Dots inside the polygonal region represent P. falciparum-infected human erythrocytes. Study performed by GlaxoSmithKline.