They pack a powerful punch to fight free radicals (highly reactive forms of oxygen that can destroy cell membranes, and other structures including DNA and collagen). (drwhitneybowe.com)
They are highly reactive forms of oxygen whose effects can damage cell membranes and other structures in the body, including DNA and collagen. (drwhitneybowe.com)
That's the time an enzyme needs to shape - shift into its most reactive form, trigger a chemical reaction and snap back into its original shape. (newscientist.com)