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fuscin 卵丝霉褐素 卵丝霉褐素 Fuscin \Fus"cin\, n. [L. fuscus dark-colored, tawny.] (Physiol.
Chem.) A brown, nitrogenous pigment contained in the retinal epithelium; a variety of melanin. [1913 Webster] Melanin \Mel"a*nin\, n. [Gr. me`las, me`lanos, black.] (Physiol.) A black pigment found in the pigment-bearing cells of the skin (particularly in the skin of the negro), in the epithelial cells of the external layer of the retina (then called {fuscin}), in the outer layer of the choroid, and elsewhere. It is supposed to be derived from the decomposition of hemoglobin. [1913 Webster]
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