THE CHEMICAL NATURE OF RESIDUE ANTIGEN PREPARED FROM YEAST.
Residue antigen recognizable by the precipitin test can be prepared from yeast as from bacteria. The active material appears to be identical with a complex carbohydrate, the "yeast gum" of Salkowski. In the purest form of it obtained small amounts of both nitrogen and phosphorus are still present, either as impurities or as part of the molecule. The yeast gum is not antigenic in the sense of producing antibodies.
Department of Bacteriology of the College of Physicians and Surgeons, Columbia University, New York, and the Department of Bacteriology and Immunology of Harvard Medical School, Boston.
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JH
Mueller
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Tomcsik