目前应用抗原抗体沉淀法进行抗原之定性或定量,不论在临床诊断上或实验室的研究中均有重要意义。如肝炎抗原、肝癌甲胎蛋白之定性,免疫球蛋白之定性和定量,自身抗体的鉴定等等,均已广泛采取此方法,并已发展用同位素、荧光、酶标记抗体的专门技术,这些实验条件最基本的是先提纯抗原,再免疫动物 At present, the use of antigen-antibody precipitation for antigen qualitative or quantitative, both in clinical diagnosis or laboratory research are of great significance. Such as hepatitis antigens, the qualitative characterization of alpha-fetoprotein in liver cancer, the qualitative and quantitative immunoglobulin, the identification of autoantibodies, and the like, have all been widely adopted and have developed specialized techniques using isotope, fluorescent, and enzyme-labeled antibodies. These experiments The most basic condition is the first purification of antigen, and then immunized animals