Pneumococcus heterophile, antigens

Pneumococcus Group or C) Polysaccharide.—This substance, fajo -h 61° (water), is the polysaccharide constituent of the somatic part of the cell, and is common to all the pneumococcus types. It shows group specificity and is generally similar to the Type IV capsular polysaccharide. Its constituent units are probably N-acetyl-D-glucosamine, a hexose and phosphoric acid. It may be termed the carbohydrate residue of the heterophile antigen (described below) of pneumococcus which was separated by Goebel and his coworkers. 

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