前言随着瘤基因(onc)研究的深入,人们已开始重视其功能和编码产物的作用。不少作者推测onc与细胞生长调节有密切关系。有些onc产物类似某些生长因子受体,如c-sis编码蛋白与PDGF-B链相似,erb-B则编码截缩(truncated)的EGF受体蛋白; Introduction With the in onc research, people have begun to pay attention to its function and the role of the encoded product. Many authors speculate onc and cell growth regulation are closely related. Some onc products resemble certain growth factor receptors, such as the c-sis-encoded protein similar to the PDGF-B chain, while erb-B encodes the truncated EGF receptor protein;