Fig. 2
From: Intertidal exposure favors the soft-studded armor of adaptive mussel coatings
2D AFM scratch tests on the cuticle surfaces. All panels labeled with (i) represent M. galloprovincialis, (ii) M. californianus, (iii) S. bifurcatus, and (iv) M. capax. a Representative AFM topographic images of all mussel thread surfaces without (top) and with (bottom) scratch traces. b Scratch depths as a function of species and hydration. c The hydrated datasets are further partitioned in the upper and lower 10%. d–f A representative scratch test on a M. galloprovincialis thread (scale bar = 2 µm), with AFM height channel recordings prior (d) and after (e) damaging the surface, as well as a difference image of both (f). Zoom-ins of the region of interest are included on the right (M = matrix and G = granules) (Bars are mean ± s.e.m., n = four biological replicates)
