n.幾丁質(zhì)；角質(zhì)素

The exoskeleton of insects is largely made of protein and chitin. 昆蟲的外骨骼大部分是由蛋白質(zhì)和幾丁質(zhì)組成的.

Glucosamine can help to synthesize chitin in crustacean shells, which aids growth. 葡萄糖氨是甲殼類動物幫助殼中幾丁質(zhì)的生成,可促進(jìn)生長。

In most species the walls of hyphal cells contain chitin. 大多數(shù)真菌的細(xì)胞壁含有明角質(zhì)。