our results show that intracellular superoxide can be spin-trapped using 5,5-dimethyl-1-pyrroline-1-oxide and that secondary free-radical injury to membrane lipids , due to excess production of partially reduced species of oxygen by intact cells , can be detected by spin-trapping lipid free radicals with phenyl n-tert-butylnitrone .
C0025249
membrane lipids
C0023779
lipid