A free radical is an atom or molecule that has an unpaired one of these
Some of these antioxidant 
molecules are present in all lifeforms examined, from bacteria to... [DOC] [TLE] Understanding Free Radicals and Antioxidants - HealthCheckSystems [PAR] Describes what free radicals are and how a diet rich in antioxidants can ... 
Molecules consist of one or more atoms of one or more elements joined by ...