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University of Nebraska Medical Center
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Electron Paramagnetic Resonance Spectroscopy Facility

Who We Are

Electron paramagnetic resonance spectroscopy is based on absorption of microwave energy by free radicals or paramagnetic species in the presence of an external electromagnetic field resulting in the transition of electron spin states. In combination with electron paramagnetic resonance-detectable, radical-sensitive cyclic hydroxylamines, often referred to as “spin probes,” electron paramagnetic resonance spectroscopy can be and has been used to measure levels of free radicals (e.g. superoxide, hydroxyl radical) in various biological samples including cultured cells, culture media, blood, and tissue.