测定血清中乙类链球菌抗体对风湿热,猩红热,胶原性疾患,风湿性心脏病,肾小球肾炎等病有辅助诊断意义。现知乙类链球菌有多种代谢产物,如链球菌溶血素O和S,链激酶,链道酶,透明质酸酶,二磷酸腺苷酶,脱氧核糖核酸酶,蛋白酶及红斑毒素等。它们多具有抗原性,当细菌感染后机体可出现 Serum B streptococcal antibodies in the diagnosis of rheumatic fever, scarlet fever, collagen disorders, rheumatic heart disease, glomerulonephritis and other diseases have a secondary diagnostic significance. It is now known that there are many kinds of metabolites of streptococcus such as streptolysin O and S, streptokinase, chain enzyme, hyaluronidase, adenosine diphosphate, deoxyribonuclease, protease and erythromycin. They are more antigenic when the body can appear after bacterial infection