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Time sequence of coarse-grained molecular dynamics simulation results showing a multi-walled carbon nanotube penetrating a cell membrane at an initial entry angle of θ0 = 45° as a function of receptor density. The receptor (green) densities are (a) ϕ = 0.25, (b) ϕ = 0.33 and (c) ϕ = 1. Figure from [35].
