jen198053

16 為甚麼心臟不會生癌？
* T6 M4 ~+ b# Q( p8 J% W0 [3 O; G4 o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。公仔箱論壇9 n' F4 m& d0 P) A4 R9 ^" [
os.tvboxnow.com; _: Z  A6 C- F! G+ A. Q
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