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has major subject area list
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Antibodies, Viral; Immunoglobulin G; Smallpox Vaccine; Vaccinia virus
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has minor subject area list
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Aged; Aged, 80 and over; Humans; Longitudinal Studies; Smallpox
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information resource reference
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Immunity from smallpox vaccine persists for decades: a longitudinal study. Am J Med. 2008 Dec; 121(12):1058-64.
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label
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Immunity from smallpox vaccine persists for decades: a longitudinal study.
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