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Keywords: 3-OH-kynurenine
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Journal Articles

Coloration principles of nymphaline butterflies – thin films, melanin, ommochromes and wing scale stacking

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Doekele G. Stavenga, Hein L. Leertouwer, Bodo D. Wilts
Journal: Journal of Experimental Biology
J Exp Biol (2014) 217 (12): 2171–2180.
https://doi.org/10.1242/jeb.098673
Published: 15 June 2014
... various amounts of 3-OH-kynurenine and ommochrome pigment, black scales contain a high density of melanin, and blue scales have a minor amount of melanin pigment. Observing the scales from their adwing (lower) side always revealed a structural colour, which is blue in the case of blue, red and black...
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Includes: Supplementary data
Journal Articles

The functional morphology of color changing in a spider: development of ommochrome pigment granules

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Teresita C. Insausti, Jérôme Casas
Journal: Journal of Experimental Biology
J Exp Biol (2008) 211 (5): 780–789.
https://doi.org/10.1242/jeb.014043
Published: 1 March 2008
...–1.6 μm) Progranule II (kynurenine + 3-OH-kynurenine, + ommochromes?) Type III Bright yellow, red stripe Brown, red (stripe) – – Spherical section, homogeneous, osmiophilic-electron-dense content(0.8–1 μm) Ommochromes Microcrystal inclusions Prosoma (opaque-white region) Pale brown...
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