16 為甚麼心臟不會生癌?
2 t) O) y/ R( w' _: |# j, J公仔箱論壇胃、肝、大腸、睪丸都會生癌,但為甚麼沒聽過有心臟癌呢?原因在於心臟以外的細胞都具有增殖機能,即使受了傷,只要過一段時間就能痊癒,這是因為細胞增殖使傷口癒合,然而心臟的細胞並不會增殖。癌細胞會持續增殖,接著破壞周圍的組織,就是因為心臟細胞不會增殖的關係,所以癌細胞是無法侵襲心臟。tvb now,tvbnow,bttvb% p3 O( z6 S2 z n' e- h' a
7 W' K6 n- e' a& ?. t. Y0 W: T公仔箱論壇in fact, the heart is made of muscle, so it can develop cancer too, normally is the cardiac muscle itself, if it's benign, it's called myxoma; if it's malignant, it's called angisarcoma |