Rat thoracic aorta elastin content expressed as a percentage of the dry weight of the vessel. Control and HLU measures were compared for saline (S)-, BAPN (B)-, cystamine (C)-, and pyridoxamine (P)-treated groups. The data were analyzed using a standard t-test for all comparisons; n = 6 for all HLU groups, and n = 4 for control S group, n = 6 for control B group and for control P group, and n = 4 for control C group. All data are reported as means ± SE.