英语语法分析

Human pancreatic ribonuclease has 128 amino acid residues.

人的胰腺核糖核酸酶有128个氨基酸残基。

Has discussed in initially the frog egg the ribonuclease active constituent.

初步探讨了蛙卵中核糖核酸酶的活性组分。

AIM: to prepare and purify the antibody against ribonuclease inhibitor (ri).

目的：制备并纯化抗核糖核酸酶抑制因子(RI)的抗体。