癌细胞为何产生?人体内每天有数千亿细胞进行基因复制和细胞再生,有些细胞在复制DNA的过程中发生错误,引起了细胞结构和功能的变化,其中有些细胞就会成为生长失去控制的癌细胞。正常情况下,大部分不正常细胞会被体内的免疫系统所消灭。但是由于致癌因素引起的DNA异常细胞往往生长速度较快,有一些癌变细胞就会逃脱身体 Why Cancer Cells Produce? There are hundreds of billions of cells in the body that perform gene and cell regeneration every day. Some cells make mistakes in DNA replication, causing changes in cell structure and function, some of which become uncontrolled cancer cell. Under normal circumstances, most of the abnormal cells will be destroyed by the body's immune system. However, due to carcinogenic factors caused by DNA abnormalities often tend to grow faster cells, some cancerous cells will escape the body