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Non-independent Occurrence of αS1 and β-Casein Variants of Cow's Milk

Abstract

THE β-casein fraction of cow's milk has been found to show genetic variants distinguishable by electrophoresis1. Part of the αs-casein fraction, now called αs1-casein (ref. 2), also shows genetic variation3. The αS1-casein type B and the β-casein type A are prevalent, while the other two known variants of each only occur in some breeds of cattle4,5. In Jersey cows αS1-casein type C and β-casein type B are seen in a fair proportion of cases.

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References

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KING, J., ASCHAFFENBURG, R., KIDDY, C. et al. Non-independent Occurrence of αS1 and β-Casein Variants of Cow's Milk. Nature 206, 324–325 (1965). https://doi.org/10.1038/206324b0

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