Since tumors are formed of mutated cells, the lymphatic system, responsible for patrolling the body and attacking pathogens, is unable to discern them, much less eliminate them.
由於腫瘤是由人體本身的細胞突變而成的，所以負責體內偵察、攻防的淋巴腺 T 細胞無法辨識它、更遑論消滅它。