= C. K. Kung
{c}
<C. K. Kung> coauthored the 1977 purification of human <erythropoietin> with <T. Miyake> and <E. Goldwasser>. The preparation was tested by <gel electrophoresis> under several chemical conditions as well as by biological activity.<Purification of human erythropoietin by T. Miyake and others>[Abstract; electrophoretic characterization and primary byline]{ref}
The study illustrates complementary evidence in <protein purification>: activity establishes that a fraction retains the sought biological effect, while separation methods examine its composition. A single band is useful evidence of apparent purity, but it does not by itself identify the mechanism of a <hormone>'s action.
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