Published: Oct 12, 2018
Free radicals can be formed in biological materials (e.g. DNA) when they undergo Ionisation (by interaction with Ionising Radiation). The free radical can be thought of as a reactive charged molecule which will readily combine with other cell constituents. A typical example is the ionisation of water which will produce H+ and OH- ions which can further react to produce Hydrogen Peroxide, which is highly oxidising and potentially very damaging to DNA.