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Properties of Scarlet Fever Toxin of the NY5 Strain^1,2,

From the Department of Bacteriology and Immunology, School of Medicine, University of Pittsburgh, and the Laboratories of the Children's Hospital, Pittsburgh, Pennsylvania

Abstract

Re-evaluation of the properties of scarlet fever toxin of the NY5 strain was made. The toxin was heat stable or heat labile depending on the method of preparation. The toxin was flocculated by most antitoxins. Its potency was found to be greater than predicted from the quantitative toxin-antitoxin floculation reaction.

Footnotes

¹ Supported in part by a research grant from the National Institutes of Health, Public Health Service.

² Paper IX of a series, Studies on the Hemolytic Streptococcus.