Methods The C-erbB-3/HER3, C-erbB-2, EGFR and PCNA expression were detected with streptavi- din-peroxidase imniunohistochemical technique in 51 cases surgically treated lung squamouse cell cancer,30 cases adjacent tissue and 15 cases normal lung tissue.

• 方法采用链菌素抗生物素蛋白一过氧化物酶免疫组化（SP）法检测51例肺鳞癌组织、30例交界组织、15例肺正常组织中C－erb－3、C－erb－2表皮生长因子受体（EGFR）、增殖细胞核抗原（PCNA）的表达。