治疗性癌症疫苗不能预防癌症,它们能够训练免疫系统将其力量转向体内已经存在的肿瘤上,从而治疗癌症如同希腊军队围攻特洛伊一样,一团团白血细胞会将一个肿瘤包围起来,一如日常打败细菌病毒,通常白细胞会获胜。但是,癌细胞不是普通的敌人,它们就像特洛伊人一样,会筑起抵抗攻击的强大路障,白细胞往往会被杀死或迫使离场,很多时候,免疫系统会在这场特洛伊之战中败北。 Therapeutic cancer vaccines, which do not prevent cancer, can train the immune system to divert their power to preexisting tumors in the body and thus treat cancer. Like the Greek army’s siege of Troy, a cluster of white blood cells surround a tumor, just as everyday beats bacteria The virus, usually white blood cells will win. However, cancer cells are not ordinary enemies. Like the Trojans, they form a powerful barricade against attacks. Leukocytes are often killed or forced to leave. In many cases, the immune system will defeat this Trojan battle .