Table 3. TBARS levels in peripheral blood of animals receiving saline (control groups) or azoxymethane (experimental groups). Results are expressed as mean values and standard deviation.

Exposed to AOM	Water	L-lysine	Propolis	Gum arabic	p-value (ANOVA)
No	12.60 ± 2.79	9.60 ± 2.97	12.00 ± 2.55	10.60 ± 3.21	0.3772
Yes	32.17 ± 7.99	31.67 ± 3.20	22.00 ± 5.10a,b	32.71 ± 4.99	0.0043
p-value (t test)	0.0006	<0.0001	0.0025	<0.0001

AOM=azoxymethane; ANOVA=analysis of variance; ^a=statistically significant in relation to Group V and Group VI (p<0.05); ^b=statistically significant in relation to Group VIII (p<0.01) (Tukey test). Significant p-values are in bold type.