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When Bonnie J. Rough receives the test results that confirm she is a carrier of the genetic condition hypohidrotic ectodermal dysplasia, or H.E.D., it propels her on a journey deep into her family's past in the American West.At first glance, H.E.D. seems only to be a superficial condition: a peculia...
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about Carrier: Untangling the Danger in My DNA
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