The specific substance from <i>Pneumococcus</i> type 34(41). The structure of a phosphorus-free repeating unit

Abstract

The serologically-specific capsular substances have been prepared from a number of pneumococci by Brown (1939) and by Brown & Robinson (1943), using mild methods of isolation. The substances were shown to be carbohydrates, in agreement with the classical discovery by Heidelberger & Avery (1923). The field has been reviewed by Stacey & Barker (1960) and by Heidelberger (1960).