Methods After the model of liver cirrhosis was established by intragastric administration of CCl 4 in male adult SD rats, the expression of hepatic ETA and ETB receptor mRNA was determined by RT PCR and the portal pressure measured.

• 方法 采用逆转录多聚酶链反应(RT PCR)测定大鼠肝组织 ETA受体和ETB受体mRNA的表达水平, 并测量门静脉压力。