联系我们联系我们
Urea is an organic compound that is the primary nitrogen-containing end product of protein metabolism in mammals, as well as some varieties of fish. The colorless substance was first isolated by French scientist Hilaire-Marin Rouelle in 1773, making it the first animal metabolite to be isolated in the form of crystals.
对不起,此内容在您的国家不适用。
您即将被转换到我们的本地网站。