Weak alkali extracts from the intact coli-B-cell a lipo-glycoproteid which after purification shows receptor activity against the phage T5 only. Purification of this material is described and data are given on physicochemical, chemical and functional properties of the T5 receptor substance as well as of receptor-inactive material extracted from B/1,5. From all the data available it is tried to form a picture of the entire structure of the coli cell wall and to connect it with the phage infection mechanism.
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Weidel et al. (1954) studied this question.