Paul Gerard Ecker

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Two samples of plastein, prepared by J. H. Northrop (1), were studied in the ultracentrifuge in an effort to determine the characteristics of the material. One sample was prepared from a hydrolyzed trypsin solution, the other from a hydrolyzed pepsin solution. Both samples were dissolved in phosphate buffer at a pH of 10.1 to a concentration of 1 per cent,(More)
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