Expressions of C-myc, Ha-ras and Ki-ras oncoproteins in the peripheral blood mononu-clear cells(PBMC) from HBsAg positive patients with liver cirrhosis (LC) and chronic hepatitis B (CHB)were studied by immunocytochemistry.

• 用免疫细胞化学染色法；检查HBsAg阳性的肝硬化(LC)和慢性乙型肝炎(CHB)病人外周血单个核细胞C-myc、Ha-ras和Ki-ras三种癌蛋白(oncoproteins)的表达情况.