In 1951 cells taken from an African American woman suffering from cancer were found to be unique because they carried on reproducing endlessly in the laboratory. Henrietta Lacks died of cervical cancer in 1951. Cultures from her cells have since been used to provide medical breakthroughs but as Farhana Haider reports, Henrietta Lacks was never asked if her cells could be used in medical research.

(Photo: Henrietta Lacks. Copyright: Lacks Family)