Direct measurement of proinsulin in human plasma by the use of an insulin-degrading enzyme

^{Laboratory of Endocrinology, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Laboratory of Metabolism, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Department of Medicine, University of Tennessee Medical Units, Memphis, Tennessee 38104}

^{Department of Biochemistry, University of Tennessee Medical Units, Memphis, Tennessee 38104}

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^{Laboratory of Endocrinology, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Laboratory of Metabolism, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Department of Medicine, University of Tennessee Medical Units, Memphis, Tennessee 38104}

^{Department of Biochemistry, University of Tennessee Medical Units, Memphis, Tennessee 38104}

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^{Laboratory of Endocrinology, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Laboratory of Metabolism, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Department of Medicine, University of Tennessee Medical Units, Memphis, Tennessee 38104}

^{Department of Biochemistry, University of Tennessee Medical Units, Memphis, Tennessee 38104}

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^{Laboratory of Endocrinology, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Laboratory of Metabolism, Research Service, Veterans Administration Hospital, Memphis, Tennessee 38104}

^{Department of Medicine, University of Tennessee Medical Units, Memphis, Tennessee 38104}

^{Department of Biochemistry, University of Tennessee Medical Units, Memphis, Tennessee 38104}

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