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.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/U...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/U...



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