This year's Nobel Prize in Medicine has been jointly awarded to three scientists for pioneering research into how human cells sense and respond to changes in oxygen levels.<br />The 2019 medicine laureates are William Kaelin and Gregg Semenza from the U.S.,... and Peter Ratcliffe from the UK.<br />The Nobel committee said the trio's discoveries paved the way for "promising new strategies to fight anemia, cancer and many other diseases."<br />The committee added that the fundamental importance of oxygen has been understood for centuries, but how cells adapt to changes in oxygen levels has long been unknown.<br />The winners would share a 9-million Swedish-crown, or 9-hundred-thirteen-thousand U.S. dollars cash prize.<br />
