Abstract
Summary
1. With Butler's phosphate buffer as a salting solution, prothrombin precipitates between 1.7 and 2.0 molar strength, which places it in the upper globulin fraction. 2. The bulk of proteins of solubility similar to prothrombin migrates electrophoretically as alpha globulin. 3. On the electrophoresis of whole plasma, prothrombin migrates with the albumin fraction.
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