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Photo by Lauren Bavis/Side Effects Public Media.

This year marks the 25th anniversary of the Rwandan genocide, which left hundreds of thousands of people dead. Kazito Kalima still carries horrific memories of that time, and he shared them at a symposium.

A Cancer Cell Detective Story: How Immunotherapy Works

Dec 18, 2014

The human immune system operates like a highly trained security team, but cancer cells still sometimes evade it. Now, scientists are developing molecules which can help the immune system detect and destroy cancer cells.  Medical oncologist and immunotherapy researcher Daniel Chen, M.D., Ph.D., created this animated video to show how the science works.