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癌细胞为什么会转移?

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癌细胞为什么会转移?

正常细胞不会转移,良xingzhong瘤细胞也不会转移,癌细胞却会转移,所以癌症是一zhong严重威胁人类生命的疾病。那么,癌细胞为什么会转移呢?首先,癌细胞有转移的"动力"。地球与月亮之间存在着引力和排斥力,由于这两gu力量的影响,便地球和月亮始终保持在特定的距离上。人ti的细胞与细胞之间也存在着引力与排斥力,这两zhong力量的大小,决定于细胞内bu和细胞表面各zhong带电离子,例如钠、钾、钙、氯等离子han量多少。正常细胞之间带电离子比例相称,细胞内外电荷保持平衡,于是引力与排斥力相等,细胞也就不会转移。癌细胞就不同,它们的钙离子数量减少,另一zhong涎酸的wu质增多,使癌细胞之间的引力减小,排斥力增加。这zhong癌细胞表面电荷失去平衡的现象,便成了转移的"动力"。其次,癌细胞有转移的方式。癌细胞有坦克式运动本领:细胞mo好比是"履带",向细胞的尾buliu动,并且溶解在细胞浆里,细胞前端便空chu一个缺口,让好比是"车shen"的细胞浆和细胞he向前移动。接着,溶解在细胞浆里的细胞mo又重新liu向细胞前端,再构成细胞mo,这样周而复始地进行,癌细胞便向前移动。最后,癌细胞有转移的"工ju"。那便是血ye、淋baye,它们成了癌细胞转移的运输"工ju"。由于有了以上三方面的条件,所以癌细胞会转移。

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