Due to a lack of financial resources, we unfortunately have to suspend the import of new articles regarding radio frequency and mobile communications as of now (November 27, 2017). If you have found the EMF-Portal useful and wish to support us, we will be very happy to accept your donation.

DONATION ACCOUNT: Uniklinik RWTH Aachen, IBAN: DE27 3905 0000 0013 0040 15, BIC: AACSDE33, Reference: GB-FM/380454/Arbm

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radical

Synonyms:
  • free radical
Chemistry. Molecule or part of a molecule bearing unpaired electrons. They may have strong chemical reactions which can damage cellular material, especially DNA (oxidative stress). Hydrogen peroxide is a well-known radical. Radicals which can be essential to enzymatic reactions occur in cells as the result of metabolic processes and from external physical or chemical influences. Radicals are rapidly eliminated within cells by molecular scavengers.