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Umbreit and Gunsalus, in O'Kane, D. E., and Gunsalus, I. C.: The Resolution and Purification of Glutamic-Aspartic Transminases , J. Biol. Chem. 170:425, 1947;.
Hawkins, W. W., and Barsky, J.: An Experiment on Human Vitamin B6 Deprivation , Science 108:284, 1948;.
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