TABLE 2.

Changes in the activities of serum enzyme of control and treated rats with chlorpyrifos, Artemisia campestris essential oil (ACEO), vitamin C, and their combination (ACEO + CPF and VitC + CPF).

Enzyme (U/L)	Experimental groups
	Control	ACEO	CPF	ACEO + CPF	VitC	VitC + CPF
AST	261.5 ± 49.32	267.5 ± 8.38	285 ± 15.14*	274.75 ± 27.73#	259 ± 31.4	262.66 ± 14.67#
ALT	52 ± 5.03	55 ± 2.77	63.66 ± 0.66*	57.66 ± 4.8#	56.5 ± 7.5	61.66 ± 2.18
ALP	212.4 ± 45.23	208.33 ± 6	275 ± 14**	206.5 ± 7.5##	213.5 ± 8.5	217 ± 43#
LDH	1847.5 ± 228.69	1802 ± 83.84	2469 ± 104**	1981 ± 152.97#	1779 ± 86	2011.33 ± 102.04#

The biochemical parameters: AST (aspartate aminotransferase), ALT (alanine aminotransferase), ALP (alkaline phosphatase), and LDH (lactate dehydrogenase) represented in international units per liter (U/L). Values are mean ± SEM; n = 6 rats in each group. Statistical significant variations are compared as follows: CPF, ACEO, ACEO + CPF, VitC, and VitC + CPF treated groups compared to control group; * indicates significantly different when p < 0.05, ** indicates highly significantly different when p < 0.01, CPF group compared to (ACEO + CPF and VitC + CPF) group; ^# indicates significantly different when p < 0.05, ^## indicates highly significantly different when p < 0.01.