Response to comment on article: hydrodynamics of sperm cells near surfaces

In the Comments to a recent study by Elgeti, Kaupp, and Gompper, the authors state that we attributed differences between our study and a previous study by Smith et al. to methodolodical flaws in the latter article. This interpretation is unwarranted. However, the authors raise the interesting possibility that species-specific details of cell morphology might account for the different predictions concerning the distance d of adhering sperm from the surface. We present new simulation results, which show that the density distribution as a function of d strongly depends on midpiece curvature and head siz