Henrietta Lacks was a woman who got very sick and went to the doctor in the 1950s. She did not know that the doctor took small pieces of her cells without asking. These cells grew in a lab and became very famous. They helped many scientists find cures and learn about diseases. Her family found out about this years later, and they felt confused and hurt. They did not receive any money for the use of her cells, raising important questions about ethics in medicine.