Methods:A total of forty-two 7-week-old female SD rats was divided into4groups:group A(blank control),B(DM-BA gavage),C(GTC gavage)and D(DMBA/GTC gavage). ,.

• 方法:42只7周龄雌性SD大鼠,随机分为A(空白对照)、B(DMBA灌胃)、C(GTC灌胃)、D(DMBA/GTC灌胃)4组。