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The combination of one or two Clearflight Pied alleles with two Recessive Pied alleles produces the Black-eyed Clear variety, with the appearance described above. This combination appears to result in the complete suppression of the melanin pigment in all the feathers, yet leaves the eyes jet-black.
The eye of the German Fallow is a deep ruby-red, like an Ino's but a shade darker, with the usual white iris ring when adult, [3] [4] and the Scottish Fallow has a pink iris ring. On hatching, young English Fallows have red eyes like Inos but young German Fallow chicks have plum-coloured eyes rather like Cinnamon chicks.
Melanin (/ ˈ m ɛ l ə n ɪ n / ⓘ; from Ancient Greek μέλας (mélas) 'black, dark') is a family of biomolecules organized as oligomers or polymers, which among other functions provide the pigments of many organisms. [1] Melanin pigments are produced in a specialized group of cells known as melanocytes.
The most obvious distinction from Cinnamons is the red eye, which in the German Fallow is a deep ruby-red, like an Ino's but a shade darker, with the usual white iris ring when adult. [2] [3] The English Fallow has an eye of a clear bright red, without a white iris ring—a beautiful and attractive feature. [2]
The stroma around the iris sphincter muscle becomes darker than the peripheral stroma. [medical citation needed] A stimulation of melanin synthesis within iris melanocytes has been postulated. [21] Neoplasm – Nevi and melanomatous tumors. Iridocorneal endothelium syndrome [3] Iris ectropion syndrome [3] [22]
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In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. [4]
A warning has been issued to travelers over the spread of three diseases, including the Marburg virus. It’s a close cousin of Ebola that’s been dubbed the “bleeding eye” virus due to one ...
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