Blutmastzellen und Heparin

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Abstract
A phenol-water extract of leukemic leukocytes, exposed to tryptic digestion, contains a metachromatic stainable and heat stable substance which resembles heparin. It is inactivated by protamin, and the paper chromatographic isolated substance shows a metachromatic reaction with toluidine blue. It contains no protein or peptide material, and is/thought to be a derivative of basophile leukocytes.