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Conceptual illustration of the Influenza A Virus H5N1, also known as bird flu, avian influenza, A(H5N1), a subtype of the Influenza A Virus which can cause illness in humans and many other animal species.
Scott Camazine/Visuals Unlimited, Inc.
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Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.