Blood products from U.K. National Institute of Biological Standards and Controls (NIBSC) and Protein Fractionation Centre, Scottish National Blood Transfusion Service (SNBTS)
Used to obtain freeze-dried preparations of factor VIII and factor IX and intravenous immunoglobulin (IgG).
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Freeze-dried preparations of factor VIII and factor IX
Stored at 4°C prior to reconstitution.
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Intravenous immunoglobulin (IgG)
Stored as a reconstituted aqueous solution (50 g/liter) at -20°C.
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Lyophilized vials of factor VIII and factor IX
Reconstituted as specified by the manufacturer immediately before use.
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B19-positive plasma
Used to spike intermediate-purity factor VIII 1:100 to investigate kinetics of B19 inactivation during heat treatment.
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Primers PV1 to PV4
Used in the initial and nested PCR reactions to detect parvovirus B19 DNA.
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Primers PV5 to PV8
Used for second reaction of the double PCR, amplifying part of the B19 genome encoding an antigenic region within the B19 nucleocapsid.
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Water
Used as the final solution for DNA extraction from plasma pools.
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Ethidium bromide
Used to stain PCR products for examination by agarose gel electrophoresis.