[unable to retrieve full-text content]A new study involves a classic case of evolution's fickle nature: a genetic mutation that protects against a potentially fatal infectious disease also appears to increase the risk of developing a chronic, debilitating condition.
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Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/UbF3qhQIBds/130731133915.htm
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