Native detergents, desintegron-O-and desintegron-B, solubilize hemagglutinins of the influenza virus as intensively, as foreign drugs (mulgophen, zwittergent and sodium sarcozyl) do. This permits recommending desintegrons for quantitative determination of hemagglutinin of the influenza virus in virus-containing materials by means of the reaction of single radial immunodiffusion. Desintegron-O and desintegron-B permit extracting enzymatically active neuraminidase from influenza A viruses with 44.6-83.4% yield.
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