Extra Oxygen Could Help Fight Cancer, Study Suggests

March 5, 2015 1:38 AM

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A provocative study in mice suggests something as simple as breathing in extra oxygen might give immune cells a boost in attacking cancer.

The immune system often can spot and destroy abnormal cells before they grow into cancer. But when tumors manage to take root, they put up defenses to block new immune attacks. Wednesday's study takes aim at one of those shields.

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