*2.4. Superoxide Production*

The production of superoxide was measured in the 15–20 mg fresh samples of the tissues using lucigenin (50 μmol/L)-enhanced chemiluminescence using a TriCarb 2910TR liquid scintillation analyser (TriCarb, Perkin Elmer, Waltham, MA, USA), as described previously by Kluknavsky et al. [26]. The results are expressed in the form of cpm/mg of wet tissue.
