6/10/2013

Scientists have sequenced the duck genome, and their findings shed light on the genetic basis for ducks' unique immunity to influenza. Ducks possess fewer immunity-encoding genes than mammals, but they have some genes that are not present in other birds, apparently making them less susceptible to most avian strains of influenza. Scientists believe ducks, which carry the viruses but don't exhibit symptoms, allow some influenza strains to evolve and spread.

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