Fig. 1
From: Dynamic pigmentary and structural coloration within cephalopod chromatophore organs
Iridescence produced in chromatophores of live squid. a Low power of mantle skin; arrows indicate narrow zones of iridescence that coincide with yellow chromatocytes (white arrows) and typical iridophores (green arrows). Scale bar is 3 mm. b, c Arrows show yellow chromatophores under different lighting angles expressing different iridescence. Scale bars are 600 µm. d Yellow chromatophores showing iridescence that coincides with the exact expansion of the chromatocyte (arrow shows concentric variation in hue seen frequently). Scale bar is 300 µm. e Contrasting iridescence from a typical subjacent iridophore (green arrow) compared to a yellow chromatophore (white arrow). Scale bar is 1 mm. f A single yellow chromatophore showing granular and patchy iridescence. Scale bar is 100 µm
