(a) Sketch of parasite at the RBC membrane. Alignment angle, θ, is defined as the angle between the parasite’s directional vector (black arrow) and membrane surface normal (green arrow). The apex distance, , is the distance between the parasite’s apex and the RBC membrane surface. (b) and (c) Sketch of a spherical parasite of radius , partially wrapped by a membrane area , with its apex (b) away from the adhesion area and (c) within the wrapped area. (d) and (e) Apex distance dapex distributions and (f) and (g) alignment angle θ distributions for all shapes. In all plots, the alignment criteria from Equation (2) are shown by the dashed lines. For a better readability, the distributions for SP and SE shapes in (d) and (e) are plotted separately from the distributions for LE and OB shapes in (f) and (g) along with distributions of the egg-like shape (EG) in all plots.