Fig. 1. The effect of cinnamon essential oil administration on liver enzymes in serum among groups. FA treatment significantly increased the serum levels of ALT (A), AST (B), and ALP (C) as a sign of tissue damage. CEO administration caused an increase in serum levels of all three liver hormones, indicating the protection CEO administration caused against FA-induced hepatotoxicity. C, control; FA, formaldehyde 10 mg/kg; V, FA 10 mg/kg+solvent; CEO10,20,100, FA 10 mg/kg+cinnamon essential oil 10,20,100 mg/kg; ALT, alanine aminotransferase; AST, aspartate aminotransferase; ALP, alkaline phosphatase. ****P<0.0001.
