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中师《生理卫生》“免疫”一节中提出:“人们患过天花或麻疹等某些传染病以后,很少第二次再患这种病,因为体内产生了对这种病的抵抗力”。那么,为什么会有个别人第二次重新患这种病呢?现将有关知识作一补充介绍。免疫分为非特异性免疫和特异性免疫,通常所说的免疫是指特异性免疫,它有两种形式,即体液免疫和细胞免疫。人体内免疫活性细胞来源如图(1)。图(1)中,T细胞、B细胞没有接触过抗原物质,不具有特异性。当人患过天花或麻疹,也即抗原物质进入人
In the “Immunization” section of the Physiological Hygienist, Prof. Zhong put forward: “People rarely get this disease for the second time after suffering from certain infectious diseases such as smallpox or measles because of the body’s resistance to the disease ”. So, why would someone have a second re-suffering from this disease? Now the knowledge for a supplementary introduction. Immunization is divided into nonspecific and specific immunity, commonly referred to as immunity is specific immunity, which has two forms, namely, humoral and cellular immunity. The body of immunocompetent cells from the source (1). Figure (1), T cells, B cells have not been exposed to antigenic material, there is no specificity. When people suffer from smallpox or measles, that is, antigens enter the human body