1.   So could malaria parasites be destroyed by assaulting them with free oxygen radicals?

2.   The ones of interest here are a highly reactive chemical species called free oxygen radicals.

3.   Prostanoids, leukotrienes, platelet activating factor, cytokines, and free oxygen radicals may all contribute to the pathogenesis of the inflammatory response.

4.   Free oxygen radicals can damage cells in various ways, so scientists are focusing on mechanisms to soak them up or defend cells against them with antioxidant chemicals.

5.   If the free oxygen radicals churned out by mitochondria are a major aging mechanism, does that imply that antioxidants, such as vitamin E, can retard aging?

6.   The red bands in the rock stopped forming once the atmosphere and ocean were saturated with free oxygen.