Most of what we know about cancer today is built upon research and discoveries done in the past.
This is especially true when you look back at Nobel Prize winners whose work has contributed to our current knowledge of this disease.
Even though the research may have been conducted by people who never knew each other—whose lives were separated by distance and time—together, their work has created the foundation for where we are today.
Here are 5 breakthroughs in cancer research that led their discoverers to win the Nobel Prize in Physiology or Medicine.