A Woman’s AncestryDNA Test Revealed a Medical Secret

September 13, 2019

(The Atlantic) – In 2017, Holly Becker took an AncestryDNA test, and the results, she would only later learn, exactly matched those of a young man in New York. This was strange, but the test was not wrong. She really did have his DNA inside her. Two decades ago, she had undergone an umbilical-cord-blood transplant to treat her non-Hodgkin’s lymphoma. The anonymous donor’s cells became her cells, and they still course through her body today. That is what the AncestryDNA test had picked up.

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