Extended Data Fig. 9: Histological sections through N. suturalis compound eyes stained with Fontana–Masson. | Nature

Extended Data Fig. 9: Histological sections through N. suturalis compound eyes stained with Fontana–Masson.

From: Fossil insect eyes shed light on trilobite optics and the arthropod pigment screen

Extended Data Fig. 9

a, Untreated section. b, Section bleached with hydrogen peroxide. c, Bleached section stained with Fontana–Masson. Note darkening of the corneal cuticle in the facet walls, which indicates the presence of melanin. Images are representative of three independent experiments. Scale bar, 50 μm (c).

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