16 為甚麼心臟不會生癌？www1.tvboxnow.com' S) J% O$ P* w: k
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。' y3 P7 [" ~# M) B' \" O
6 d% R: ]' }. d' z( b& |; ?/ ~8 w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  |
發表於 2007-5-27 12:20 PM
| 
www1.tvboxnow.com' O. r, `; u1 E; o m9 D
發表於 2007-6-6 12:51 PM
| 
