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一、乙型肝炎抗原的抗原性 HBAg是具有多种抗原的物质,其化学组成有蛋白、脂质、胆固醇、醣、核酸及DNA多聚酶。比重为1.063—1.300,沉淀系数SW_(20)40—110,电泳分布在β与α_2球蛋白之间,HBAg的多肽蛋白主要是由分子量26,000的P_1,32,000的P_2及40,000的P_3组成,都具有抗原性。脂质对抗原决定簇有保护作用。HBAg的DNA是双链的,分子量在
First, the antigenicity of hepatitis B antigen HBAg is a variety of antigens with the chemical composition of protein, lipid, cholesterol, sugar, nucleic acid and DNA polymerase. The specific gravity was 1.063-1.300. The sedimentation coefficient was between SW 20 and 40-110. Electrophoresis was between β and α 2 globulin. The polypeptide of HBAg mainly consisted of P_1 of 32,000 and P_3 of 40,000 with molecular weight of 26,000, Antigenicity. Lipids have a protective effect on antigenic determinants. HBAg’s DNA is double-stranded and has a molecular weight of