Researchers analysed thousands of laboratory-made plasmids and discovered that nearly half of them had defects, raising questions of experimental reproducibility.
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Five years ago, Sun Mi Stapel, a claims handler at a Dutch insurance company, began searching for her South Korean birth family.
Ms. Stapel first turned to the Dutch adoption agency that had placed her with her adoptive parents in Krommenie, the Netherlands, where she grew up. Then she tried Korea Social Service, which had handled the Korean side of her adoption. Last year, she finally obtained her adoption files, but they were missing vital information.
She traveled to Seoul, appearing on a morning television show with her baby photos and asking viewers to call a hotline with any information. She registered for a national database for missing people. She distributed fliers in the neighborhood around her orphanage in Incheon, where she was born, and visited nursing homes and community centers there in hopes of finding someone who knew her parents.
No one did.
So on a recent Tuesday afternoon, Ms. Stapel, 46, went to a guesthouse for adoptees in Seoul, where a volunteer rubbed the inside of her cheek with a cotton swab, dropped the swab in a tube...