Plasma thiobarbituric acid reactive substances (TBARS). Plasma TBARS levels were determined six weeks post-operatively and reported as nmol MDA/mL. Values are expressed as the mean ± standard error for each rabbit group: chow (n = 7), chow plus NAC (n = 6), chow plus probucol (n = 8), high cholesterol (HC, n = 6), HC plus NAC (n = 7), and HC plus probucol (n = 8). * P < .05 between chow and HC groups. †† Data from reference 10