3 get Nobel Medicine prize for learning how cells use oxygen

By JAN M. OLSEN, MARIA CHENG and DAVID KEYTON
STOCKHOLM — Two Americans and a British scientist won the 2019 Nobel Prize for Physiology or Medicine for discovering how the body’s cells sense and react to oxygen levels, work that has paved the way for new strategies to fight anemia, cancer and other diseases, the Nobel Committee said.
Drs. William G. Kaelin Jr. of Harvard University, Gregg L. Semenza of Johns Hopkins University and Peter J. Ratcliffe at the Francis Crick Institute in