Abstract
Summary
When grown in sucrose broth some strains of group H streptococci produced large amounts of material reactive with types 2 and 20 antipneumococcus and with antileuconostoc serums; little or none was produced by the same streptococci when grown in dextrose broth. This reactive material was different from the streptococcus antigen involved in the usual Lancefield grouping test; as much of the latter was produced in dextrose as in sucrose broth culture.
In addition to indicating an interrelationship of the different Gram-positive cocci the data furnished an example of the influence of a particular carbohydrate upon the capacity of some microörganisms to elaborate a serologically reactive polysaccharide.
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