They
were blotted dry, weighed quickly and homogenized in ice
cold 0.15 M Tris–KCl buffer (0.15 M KCl ? 10 m M
Tris–HCl, pH 7.4) to yield 10% (w/v) homogenate. An
aliquot of the homogenate (0.5 ml) each was used for the
assay of reduced glutathione [31] and the levels of lipid
peroxidation [32].