Tumor growth causes stress in cells, leading to a build up of free radical molecules that attack the lipids in cell walls, tearing out molecules with long chains of carbon atoms.

• 肿瘤的生长对细胞造成压力，导致自由基分子的积累，自由基分子对细胞壁上的脂质发起攻击，扯下带有长链碳原子的分子。