英语语法分析

Although newborn animals are immunocompetent, they usually possess no Igs at birth.

虽然新生动物有免疫活性，但它们在出生时，一般不含免疫球蛋白。

Evidences showed that epidermal melanocytes are a new type of immunocompetent cells.

已发现皮肤黑素细胞是一种具有免疫学功能的新型细胞。

Methods Totally 31 leukemia children and 31 immunocompetent children as a control group were involved in the study.

方法实验组为31例白血病患儿，对照组为31例免疫功能正常儿童，两组儿童的年龄、性别无差异。