The Nobel Prize committee decided on Monday to posthumously award Dr. Ralph Steinman a prize in medicine and physiology. Steinman's ground-breaking winning research into dendritic cells helped treat his own pancreatic cancer, but he died just three days before the committee awarded him with the prize. Nobel rules say the award can only go to living scientists, but the foundation did not know Steinman had died on Friday and thus did not reverse their decision. Steinman shares this year's award with two other researchers, Bruce Beutler and Jules Hoffmann.
Steinman's daughter, Alexis Steinman, remembers her father's work and legacy.
Here's a video of Ralph Steinman explaining his work, from 2010: