论文部分内容阅读
胸腺可增强免疫力胸腺是重要的免疫器官。而在上世纪60年代以前,人们一直以为它是进化过程中退化残余之物,是个无用的器官。胸腺在幼年时期非常发达,青春发育期后开始缩小。到了花甲或古稀之年,就由昔日的核桃大变为花生米大以至更小了,80岁以后几乎完全消失。科学家认为,人的衰老乃至死亡,
Thymus can enhance immunity Thymus is an important immune organ. Before the 1960s, people always thought that it was a degraded remnant of the evolutionary process and a useless organ. The thymus is very well developed in early childhood and begins to shrink after puberty. When it comes to the age of flower or seventies, it has changed from the old walnut to the peanut even bigger and smaller. After the age of 80, it almost completely disappeared. Scientists believe that human aging and even death,