While 31-year-old Henrietta Lacks laid in a hospital bed, dying of cervical cancer, doctors took two samples of the tumor cells growing inside her. 62 years later, those cells are still growing and have served as the foundation for countless experiments, including vaccine development and drug safety trials. Problem is, Henrietta Lacks had no idea this had happened, and neither did her family until 1973, when a scientist called to ask for blood samples from her children as part o