Those mutations prod the cell into replicating wildly, allowing it to escape the control that genes normally maintain over the growth of new tissue. 这变异刺激细胞大规模复制，使它能摆脱新组织生长过程中基因通常保持的控制。
Progesterone is a female sex hormone known to regulate the growth of normal breast tissue while also seeming to be inoled in breast cancer. 孕酮是一种调节正常乳房组织生长的雌性激素，似乎也参与了乳癌的形成。
