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  • Title: Cystatins of human placenta.
    Author: Warwas M, Sawicki G.
    Journal: Acta Biochim Pol; 1989; 36(1):7-15. PubMed ID: 2787571.
    Abstract:
    Two low-molecular protein fractions inhibiting cysteine proteases were isolated from human placenta by alkalization to pH 11, acetone fractionation, affinity chromatography on CM-papain-Sepharose 4B, and Sephadex G-75 gel filtration. The results of polyacrylamide gel electrophoresis, isoelectric focusing indicate that one of there fractions in a dimer of cystatins B, and another is a mixture of cystatins A and B.
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