“Day wouldn’t have understood the concept of immortal cells or HLA markers coming from anyone, accent or not—he’d only gone to school for four years of his life, and he’d never studied science. The only kind of cell he’d heard of was the kind Zakariyya was living in out at Hagerstown. So he did what he’d always done when he didn’t understand something a doctor said: he nodded and said yes.” EducationHelaHenrietta LacksHuman CellsDay LacksMedical Disclosure Book:The Immortal Life of Henrietta Lacks Source: The Immortal Life of Henrietta Lacks