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Occurrence of Different Beta-Lactoglobulins in Cow's Milk


DURING the past twenty years, numerous physico-chemical investigations of crystalline β-lactoglobulin prepared from cow's milk have revealed a degree of heterogeneity puzzling in a protein considered to be ‘pure’ (see the recent discussion of this problem by Ogston and Tilley1). In general, mixed milk has been used as the starting material, and it has been tacitly assumed that the β-lactoglobulin synthesized by the mammary gland is the same for all cows. This is not the case.

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ASCHAFFENBURG, R., DREWRY, J. Occurrence of Different Beta-Lactoglobulins in Cow's Milk. Nature 176, 218–219 (1955).

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