Fig. 2

Oberhautchen cells’ morphology in B. fuliginosus. (a) Confocal microscopy image of SYTO9-labelled oberhautchen cells at the tip of an embryonic dorsal scale (day 46 post-ovoposition); the borders of two cells are highlighted in red; (b) SEM image of nanogratings at the tip of a scale in a neonate; the cranial and caudal borders are indicated with dashed and plain lines, respectively; (c-e) nanograting pattern transition (short to long digits and surface holes to surface channels) from the base (c) to the middle (d) to the tip (e) of an adult scale. Scale (white bars): 10 μm (a) and 2 μm (b-e)