Fig. 1

Three-dimensional refractive index and phase map of P. knowlesi-infected RBCs. a 3D RI maps of P. knowlesi-infected RBCs and b cell topography shown by 2D phase map image. The black arrow indicates hemozoin. Images in rows from the left to right show uninfected RBCs, ring, trophozoite, and schizont using focused plane (top). Color maps show the refractive index (n) (top right) and the cell topography (bottom right). The scale bar is 3 μm. u.RBCs = uninfected RBCs. The 3D-rendered isosurface of RI maps from the top view