小虎子两岁半,长得白白的,天真、活泼,很招人喜爱。就是经常生病,成天不是打针就是吃药,每月感冒至少2—3次。经检查大夫说,虎子患有免疫缺陷病,因而常常感冒。 医学上把人体对各种疾病的防御、监视和维护自身稳定的能力叫作免疫功能,免疫功能是靠免疫系统即免疫器官、免疫细胞、免疫分子来共同完成的。如果免疫系统先天发育不良或后天病损,机体就不能有效地抵御外来细菌、病毒等 Two and a half years old, white, naive, lively, very lovable. Is often sick, all day is not an injection is medicine, a cold at least 2-3 times a month. After checking the doctor said that the tiger suffering from immune deficiency disease, which often cold. Medically speaking, the human body’s ability to defend, monitor and maintain its own stability against various diseases is called immune function, which is accomplished by the immune system, ie, immune organs, immune cells and immune molecules. If the immune system is congenital hypoplasia or acquired disease, the body can not effectively resist foreign bacteria, viruses, etc.