The water-soluble B-vitamins

Abstract
Fractionation of liver extracts by fuller''s earth did not yield fractions with identical dietary essentials for the rat as were obtained by similar treatment of autoclaved yeast extracts. However, a fraction biologically identical with yeast filtrate fraction was obtained from amyl alc. extracts of liver extracts and a fraction identical with yeast eluate fraction resulted when the residue from the above amyl alc. extractions was treated with fullers'' earth and the fullers'' earth eluted with Ba(OH)2.

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