This again promotes more tumor killing by these cells via apoptosis and the production of reactive oxygen and nitrogen intermediates.

The anemones, in turn, produce antioxidants called superoxide dismutases to protect against reactive oxygen that causes oxidative stress.

Metals have oxide skins because they are usually sitting in air, which has very reactive oxygen.

Antioxidants protect other substances, like fats, from breakdown in the presence of reactive oxygen.

In contrast, an enzyme that's used to neutralize reactive oxygen has an acidic one there.

But the striking result was that the altered version was now capable of neutralizing reactive oxygen (albeit inefficiently).

A great example is the protein that eliminates reactive oxygen within our cells.

One source of reactive oxygen under normal conditions in humans is the leakage of activated oxygen from mitochondria during oxidative phosphorylation.

The release of reactive oxygen and nitrogen intermediates by macrophages is also suppressed by IL-10 [ 13 14 ] .

Both intracellular and extracellular reactive oxygen species can be removed from the environment by antioxidants produced biologically as a defense mechanism.