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The z component (perpendicular to the wall) of characteristic trajectories of sperm with elastic (MCE) and stiff (MCS,TCS) tails and various flagellar curvatures, as indicated. MCE and TCS sperm adhere strongly to the wall. MCS sperm with moderate preferred curvature c0(m)Lm = 0.7 show weak surface capture, with oscillations caused by hindered rolling motion. MCS sperm with small preferred curvature c0(m)Lm = 0.35 do not adhere.
