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A free radical is a molecule with an unpaired electron.
Indirect evidence of increased free radical activity (oxidative stress) may be obtained by measurement of antioxidant concentrations in all tissue and body fluids.
And finally a reperfusion injury characterized by free radical formation and oxidative stress.
Thus, desiccation sensitivity may result from an inadequate provision of free radical scavenging mechanisms.
When a free radical reacts with a non-radical molecule a new radical is created, and consequently chain reactions are often initiated.
Free radical scavengers ameliorate the 2-cell block in mouse embryo culture.
The presence of the free radical scavenging enzymes in parasitic organisms has been linked with immunomodulation.
They are known free radical scavengers and metal chelators.
The free radical theory of aging : a critique.
During the hydrolysis again a free radical mechanism should be advocated for the reaction.
During rehydration, superoxide dismutase and glutathione reductase activities increased markedly, possibly affording free radical protection until full hydration and metabolic recovery had occurred.
Possibly this is as a result of free radical formation.
Free radical activity following contraction-induced injury to the extensor digitorum longus muscles of rats.
Ageing: a theory based on free radical and radiation chemistry.
By a feedback mechanism on presynaptic auto-receptors, they reduce dopamine turnover and associated free radical production.
