response to gamma radiation cellular response to ionizing radiation cellular response to gamma radiation biological_process Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum. 2009-12-18T02:00:50Z GO:0071480 cellular response to gamma ray cellular response to gamma-ray photon midori