Could oxygen make cancer therapy work better?

Researchers have been looking for years for a way to use oxygen to fight cancer. Now, they may finally have one. A new study finds that giving high-dose oxygen may help efforts to stimulate the immune system against tumors. The study's only been done in mice and hasn't been shown safe in people yet — but it does open some possibilities, the researchers report in the journal Science Translational Medicine. "This is exciting work," said Susanna Greer, director of clinical research and immunology for the American Cancer Society. "This is the kind of data that definitely makes you catch your breath a little bit."