Tseng explains that the linking of estrogen and estrogen receptors stimulates breast cancer cell growth. They are like a key and a keyhole. Once the key is inserted into the keyhole, the door is opened and a series of biological reactions take place within the cell, producing accelerated pathological changes.
曾令民指出，雌激素藉由和雌激素「受體」結合，刺激乳癌細胞生長，兩者之間的關係，有如「鑰匙和鑰匙孔」，一旦鑰匙插入鑰匙孔，開啟了大門，細胞內部就會產生一連串的生物反應，因而加速病變產生。