胸腺是人体免疫系统中最重要的中枢器官之一。胸腺分泌出来的免疫活性肽物质好象人体健康的卫士,每时每刻都在监视着人体内的变异细胞。人体细胞在新陈代谢时,每天约有十万个变异细胞产生,当这些变异细胞出现时,免疫活性肽物质会毫不留情地把它们消灭掉。人体胸腺在幼年和儿童时期发达,以后逐渐萎缩,中年期萎缩速度加快,老年期胸腺萎缩得更厉害,导致 The thymus is one of the most important central organs in the body’s immune system. Thymus secreted by the immune peptide material seems like human health guards, all the time monitoring the body’s mutated cells. In the metabolism of human body cells, there are about one hundred thousand variant cells produced each day, when these variant cells appear, immune active peptide substances will mercilessly destroy them. The human thymus developed in childhood and childhood, then gradually shrinking, accelerated middle age atrophy, thymus atrophy worse, leading to