| http://www.w3.org/ns/prov#value | - The recombinant virus may have the genetic background of a H1N1 virus used in vaccine development such as A/PR/8/34 virus or any influenza A virus, including cold-adapted strains of A/Leningrad/134/17/57, A/Leningrad/134/47/57 and A/Ann Arbor/6/60.
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