Mouse study suggests high doses of oxygen might lower cancer's defense against immune cells

March 4, 2015 8:09 PM

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WASHINGTON (AP) — A provocative study in mice suggests something as simple as breathing in extra oxygen might give immune cells a boost in fighting cancer.

Tumors put up defenses to block immune system attacks. One way: Low oxygen levels inside the tumor can spur production of a molecule that blocks tumor fighters called T cells. Researchers at Northeastern University wondered if adding oxygen to tumors could strip away that defense. So they put mice w...

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