Define melanin. melanin synonyms, melanin pronunciation, melanin translation, English dictionary definition of melanin. n. Any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers. American Herita
A pigment called melanin protects the ___layers of skin from sun rays. A.underB.belowC.underlyingD.underneath 答案 C近义辨析。此题需辨清词性;本题空白处应填形容词,而选项;A.under作介词或副词;B.below作介词或副词;C underlying在下面的,下层的,为形容词;D.underneath作介词或副词;因此只有C正确...
Seman G, Gallager HS, Johnson DE: Melanin-like pigment in the human prostate. Prostate 3:59-72, 1982Seman G, Gallager HS, Johnson DE. Melanin-like pigment in the human prostate. Prostate. 1982;3:59-72.Seman G, Gallager HS, Johnson DE. Melanin-like pigment in the human prostate. ...
Melanin is a heteropolymer formed by the polymerization of phenolic and indolic compounds. It occurs in organisms across all biological kingdoms and has a range different of functions, thus indicating its important evolutionary role. The presence of melanin offers several protective advantages, including...
Melanin is a pigment, typically present in mammalian hair, skin, and eyes, and equally widespread in birds, lizards and insects33. Its most common function is to absorb light, to protect animals from ultraviolet radiation or to generate cryptic colouration. In insects, melanin is generally ...
aThe main kind of pigment in human eyes, hair, and skin is called melanin (黑色素). It makes the cells in living things brown or black. Most people, even those with light coloring, have some melanin pigment in their eyes, hair, and skin. But not everyone has the same amount of melan...
Melanin-like pigment in the human prostate. Twenty surgical specimens of prostate [1 histologically normal, 8 with benign hyperplasia (BPH), and 11 with cancer (PCa)] were examined by histochemical s... G Seman,HS Gallager,DE Johnson - 《Prostate》...
we focus on masks of males and test whether it is involved in male–male interactions, mating success, and parental care. Both males and females have conspicuous black masks that are most likely melanin-based, as no other pigment is known to produce pitch-black feathers in birds (Jawor and...
2.a coloring matter or substance. 3.any of various biological substances, as chlorophyll and melanin, that produce color in the tissues of organisms. v.t. 4.to color; add pigment to. v.i. 5.to acquire color. [1350–1400; Middle English < Latinpigmentumpaint =pig-(s. ofpingeretopaint...
A pigment called melanin protects the ___ layers of skin from sun rays.A.underB.belowC.underlyingD.underneath的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高