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老年人血液中T细胞和B细胞显著减少。B细胞是产生抗体,摧毁外来病原的细胞;T细胞是一种对癌细胞、病毒和细菌有抑制和消灭作用的细胞。国外有科学家认为,如果将人青年时期的T细胞取出一部分,经一200℃超低温冷冻贮存,等到老年时再将其解冻注入机体血液内,由于体内补充了生机旺盛的T细胞,可使年老追化的免疫系统重新活跃起来。由于补充的这些T细胞是自身的,因此不会发生排斥反应,既安全又有效。美国、加拿大已有数千人接受了T细胞治疗。
T cells and B cells in the blood of the elderly are significantly reduced. B cells are antibodies that destroy foreign pathogens; T cells are cells that inhibit and destroy cancer cells, viruses and bacteria. Some foreign scientists believe that if a part of human youth T cells removed by a 200 ℃ cryopreservation, and then thawed into the body when the blood in the elderly, the body due to the vigorous recruitment of T cells, can make the elderly The chasing of the immune system reactivated. Since these T cells that are replenished are themselves, rejection does not occur and is both safe and effective. Thousands have been treated with T cells in the United States and Canada.