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Raphe morphology and track patterns of five biofilm-forming diatoms. From Left to Right: scanning electron microscopy (SEM) of each diatom with raphe highlighted (color overlay denotes the raphe curvature κr), sample brightfield image of a moving cell (the Inset shows a schematic on the motion), and maximum intensity projection of a diatom population for (A) Cylindrotheca closterium, (B) Halamphora sp., (C) Nitzschia ovalis, (D) Pleurosigma sp., and (E) Seminavis robusta.
