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. 1961 Jan 31;113(2):451–466. doi: 10.1084/jem.113.2.451

THE OCCURRENCE OF TWO M ANTIGENS IN CERTAIN GROUP A STREPTOCOCCI RELATED TO TYPE 14

Grove G Wiley 1, Armine T Wilson 1
PMCID: PMC2137351  PMID: 13785271

Abstract

A strain of Group A streptococcus previously considered to belong to Type 14 was shown to have two immunologically distinct M antigens, designated Type 14 and Type 51. Most strains having the Type 14 M antigen were found to have also the Type 51 M antigen, and are considered to belong to Type 14–51. Four strains had the Type 51 M antigen without the Type 14 M antigen and one strain had the Type 14 M antigen without the Type 51 M antigen. The failure of a variant to produce the known M antigen of the parent strain does not necessarily mean that the strain is M-, because a second M antigen may be present as was the case in several strains described here.

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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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