Pasteurization (heat treatment at +60 degrees C for 10 hours in solution) during the production of human plasma protein preparations has proved useful 1. to inactivate a broad spectrum of viruses and 2. in combination with stabilizers to leave the nativity of the products unaffected. Their efficacy has been experimentally tested for HTLV-III/LAV, Hepatitis B and non-A/non-B viruses. The following preparations were tested: with HTLV-III/LAV: Factor VIII, Factor IX, AT III, AHC and PPSB; with Hepatitis B virus: Factor VIII, Factor XIII, AT III, PPSB and Fibrinogen; with Hepatitis non-A/non-B virus: Factor VIII and AT III.
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