The biologically important free radicals are the oxygen species, superoxide O•2-, the hydroxyl radical OH•, and the reactive nitrogen species NO•; each may play a significant physiological or pathophysiological role in the body.
See ageing; nitric oxide; oxygen.
"free radicals." The Oxford Companion to the Body. . Encyclopedia.com. (May 25, 2018). http://www.encyclopedia.com/medicine/encyclopedias-almanacs-transcripts-and-maps/free-radicals
"free radicals." The Oxford Companion to the Body. . Retrieved May 25, 2018 from Encyclopedia.com: http://www.encyclopedia.com/medicine/encyclopedias-almanacs-transcripts-and-maps/free-radicals
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"free radicals." A Dictionary of Food and Nutrition. . Encyclopedia.com. (May 25, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/free-radicals
"free radicals." A Dictionary of Food and Nutrition. . Retrieved May 25, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/free-radicals