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Wikipedia

Mucin:

Mucins are a family of high molecular weight, heavily glycosylated proteins (glycoconjugates) produced by epithelial tissues in most organisms of Kingdom Animalia.

黏液素:

黏液素（Mucins，或简称黏素）是一类高分子量蛋白家族，且高度醣基化（属于glycoconjugate），在大部分后生动物的上皮组织中都有表达 Mucins' key characteristic is their ability to form gels; therefore they are a key component in most gel-like secretions, serving functions from lubrication to cell signalling to forming chemical barriers.。