Abstract
FOWL serum contains a protein which has a lower mobility than γ-globulin in agar-gel electrophoresis at pH, 8.6 and was therefore designated δ-globulin1. This component of serum is exceptional in that it has a molecular weight of only about 20,000 and that prolyl constitutes approximately 12 per cent of its amino-acid residues (Richards, to be published). A method for isolating δ-globulin has been described1, but it is complicated by the fact that only small amounts of this component are present in adult fowl sera. For this reason, and in view of its unusual characteristics, its occurrence in young birds and in other avian species was investigated.
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References
Richards, C. B., and Marrack, J. R., in Protides of the Biological Fluids, Proc. Eleventh Colloq., Bruges, 1963, edit. by H. Peeters (Elsevier, Amsterdam, 1964).
Long, P. L., and Pierce, A. E., Nature, 200, 426 (1963).
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RICHARDS, C., ORLANS, E. Serum Delta-Globulin in the Young Fowl (0–29 Days) and in Other Avian Species. Nature 205, 92–93 (1965). https://doi.org/10.1038/205092a0
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DOI: https://doi.org/10.1038/205092a0
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