在日常生活中，人们常常在自己的颈部、腹股沟等处，摸到形似黄豆或蚕豆大小的肿块，这就是医学上所说的淋巴结。淋巴结是由许多淋巴结细胞所组成，它担负着阻挡细菌和毒素的作用，防止细菌扩散到全身，医学上称之为“防御屏障”。比如说，身体某一部分发炎时，细菌或毒素可由 In daily life, people often feel in their own neck, groin and other places, the size of the shape of beans or beans mass, which is medically said lymph nodes. Lymph nodes are composed of many lymph node cells, which take the role of blocking bacteria and toxins, to prevent the spread of bacteria to the body, medically known as the “defense barrier.” For example, when a certain part of the body is inflamed, bacteria or toxins can be used