例句 |
1. Epidermal growth factor is a single-chain peptide with 53 amino-acid residue. 表皮生长因子(epidermal growth factor EGF)是最初从小鼠的下颌下腺提取的一种含有53个氨基酸残基的单链多肽。 2. Telia are dark brown or black, and shine from the intact host epidermal covering. 冬孢子堆呈暗褐色或黑色,覆盖在完整的寄生表皮下显得发亮。 |