知识贝壳
知识贝壳
所属栏目：英汉双解细胞与分子生物学
A viscouswatery mixture of proteins,polysaccharides,and other substances that surrounds cells inthe tissues of animals.It provides a frame-work that helps bind cells together,giving strength and integrity to tissues. It is also theenvironment in which tis ......（本文共 1312 字 ） [阅读本文] >>