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COVER.
Genetic lineage of the 2009 A(H1N1)
influenza virus. This virus received its
gene segments from North American avian
(blue), Classical swine (orange) and human
(purple) viruses, followed by an
introduction of genes from the Eurasian
swine (green). The gene segments and
proteins of the final triple recombinant
virus are colour-coded accordingly. See page
306. |