ABC - DEF - GHI - JKL - MNO - PQRS - TUV - WXYZ Free radical
Definition:
A free radical is an atom or molecule that is highly reactive because it contains an unpaired electron in the outer shell.
Free radicals are formed as necessary intermediates in a variety of normal biochemical reactions, but can damage important cellular molecules such as DNA or lipids.
Radicals can have positive, negative or neutral charge.
Source & ©: GreenFacts
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Source & ©: healingdaily.co Free radicals and your health 
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