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. 1957 Sep 30;106(4):525–544. doi: 10.1084/jem.106.4.525

DIFFERENTIATION OF GROUP A STREPTOCOCCI WITH A COMMON R ANTIGEN INTO THREE SEROLOGICAL TYPES, WITH SPECIAL REFERENCE TO THE BACTERICIDAL TEST

Rebecca C Lancefield 1; With the Technical Assistance of William N. Everly1
PMCID: PMC2136803  PMID: 13475611

Abstract

In further study of streptococci having the R antigen, the bactericidal test has been used instead of the mouse protection test in investigating the type-specific M antigens of these organisms. The results have been confirmed by M anti-M precipitin tests, and a correlation between the M and T antigens of the strains has been shown. On the basis of a specific M antigen, type 28 has been shown to comprise Griffith's strain Small and four other R-containing strains. A number of other strains previously thought to belong to type 28 on the basis of R antigen reactions have now been identified as belonging either to type 2 or to a new type, designated 48, which shows a one-way cross-relationship to type 13. The bactericidal test is suggested as a useful method for assessing M antigen in group A streptococci and for establishing type-specificity by means of a biological test which is more widely applicable than the standard mouse protection test.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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