FIELD: medicine.
SUBSTANCE: invention relates to immunology and biotechnology. Claimed is an application of Fc region with mutation 434S and 428L for increasing the period of half-life in vivo of a polypeptide, which contains the said region.
EFFECT: application of the invention provides the increased time of half-life of the antibody with the said Fc region, which can be applied in medicine for obtaining different constructions of antibodies with the prolonged time of retention in blood serum in vivo.
2 cl, 22 dwg, 7 ex
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