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Fig. 6. Force vs time of representative trials. In all trials, shear
velocity was 50 µm s-1. (A) Setal arrays compressed and relaxed
vertically. (B) Setal arrays compressed and relaxed against the natural path
of drag (`against setal curvature'), opposite to the usual direction for
climbing in which they do not adhere. (C) Setal arrays compressed and relaxed
along the natural path of drag (`with setal curvature', in the typical
orientation that geckos use them to climb.