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  • Title: Subtyping of haptoglobin--presentation of a new method.
    Author: Teige B, Olaisen B, Pedersen L.
    Journal: Hum Genet; 1985; 70(2):163-7. PubMed ID: 3891580.
    Abstract:
    A method is described for large scale routine phenotyping of haptoglobin (Hp) which allows complete subtyping without prior purification of the Hp molecule. The procedure includes polyacrylamide gel isoelectric focusing of reduced, neuraminidase treated serum or plasma samples, and nitrocellulose blots developed with the immunoperoxidase technique. Different variables including sample treatment, electrofocusing, blotting procedures, and immunoperoxidase visualization are discussed. Characteristic alpha-chain patterns allow identification of the common allotypes 2FS, 2SS, 2FF, IS, IF, and Johnson. Isoelectric variations in the beta-chain may also be recognized. For comparison, two-dimensional Hp-patterns are presented. The results from concurrent typing of 600 samples by ordinary starch gel electrophoresis and by the described isofocusing technique, are evaluated.
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