Common (non-type-specific) antigens of group A streptococci
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Type-specific Polysaccharide Antigens of Group B Streptococci
The type-specific antigen of Group B Type II streptococci has been prepared free of other known cell components. This antigen is a capsular polysaccharide containing D-galactose, D-glucose, N-acetyl-D-glucosamine, and a labile component which has not been chemically characterized. Extraction of Type II streptococci with cold TCA yielded this antigen which contained two serological determinants....
متن کاملType-specific Antigens, M and T, of Matt and Glossy Variants of Group a Hemolytic Streptococci
1. Two qualitatively different type-specific antigens, designated M and T, have been found present in matt variants of group A hemolytic streptococci, but only one of these, the T antigen, occurs in the degraded glossy variant. 2. The protein nature of the M antigen, present in matt variants only, has been demonstrated in previous work, but the chemical characteristics of the newly recognized a...
متن کاملSerological relationships of type I antigens of group B streptococci.
Some of the complex antigenic relationships of type I group B streptococci from various clinical sources were defined by means of immunodiffusion, absorption, and precipitin tests. Three predominant types are described: Ia, Ib, and Ii. Methods for preparing antisera for differentiating type I strains are presented.
متن کاملThe Cellular Antigens of Group a Streptococci
The immunoelectrophoretic characteristics of the known cellular antigens of serotype 17, Group A streptococci have been presented. These include C, M, T, and polyglycerophosphate. In addition, three hitherto undescribed antigens of serotype 17 have been encountered. The F antigen occurs in most serotype 17 strains, has a faster electrophoretic mobility than M, appears in acid, distilled water, ...
متن کاملAntigens of group A streptococci involved in passive hemagglutination reactions.
Antibodies to streptococcal extracellular products were detected in rabbit sera by passive hemagglutination tests as early as 1 week after intravenous injection of live group A streptococci (strain C203S). Using these antibodies in immunoadsorbent columns, we prepared an antigenic fraction from crude concentrates of streptococcal extracellular products. The specific activity of this fraction in...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1977
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.17.1.21-27.1977