(A) Liver, (B) erythrocyte and (C) WBC CCS content of rats fed diets differing in Zn and Cu. CCS expression in liver is expressed relative to that of β-Actin. CCS expression in erythrocytes and WBCs is expressed relative to that of GAPDH. Bars signify the mean ± SEM, n = 12 (for liver and erythrocytes) or 7 (for WBCs)/diet group. Diet groups without a common letter differ (P < 0.05).