The more Deborah struggled to understand her mother’s cells, the more HeLa research terrified her. When she saw a Newsweek article called PEOPLE-PLANTS that said scientists had crossed Henrietta Lacks’s cells with tobacco cells, Deborah thought they’d created a human-plant monster that was half her mother, half tobacco. When she found out scientists had been using HeLa cells to study viruses like AIDS and Ebola, Deborah imagined her mother eternally suffering the symptoms of each disease: bone-crushing pain, bleeding eyes, suffocation.