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【美国《橡树岭国家研究所评论》1988年第21卷第1期第34页报道】在癌症的初期,往往是在原始肿瘤发展到已经转移,即发展到癌细胞已扩散到机体的其它部分之后,才能被检测出来。早期发现可以使医生在癌拄扩散到多半不可治愈之前将癌细胞消灭。这在几乎所有情况下将大大增加患者生存的机会,并减少由癌症治疗造成的创伤。一旦肿瘤开始生长,它便立即产生微量的被称为抗原的特征蛋白质。如果这些极少
[USA Oak Ridge National Institute Review, 1988, Vol. 21, No. 1, p. 34] In the early stages of cancer, it was often the development of the original tumor that had already metastasized, that is, the development of cancer cells that had spread to other parts of the body. After that, it can be detected. Early detection can allow doctors to eliminate cancer cells before the cancer spreads to the point where it is mostly incurable. This will, in almost all cases, greatly increase the chance of survival of the patient and reduce the trauma caused by cancer treatment. Once the tumor begins to grow, it immediately produces traces of characteristic proteins called antigens. If these are few