Table 2. Number of aberrant crypt foci (ACF) with ≤ 4 crypts in the entire colon and in colon segments (distal, middle, proximal) of the animals in the four experimental groups. Results are expressed as mean values and standard deviation.

Colon segment	Group V (water)	Group VI (L-lysine)	Group VII (propolis)	Group VIII (gum arabic)	p-value (ANOVA)
Proximal	2.17 ± 3.71	0.00 ± 0.00	2.14 ± 2.41	0.00 ± 0.00	0.1250
Middle	18.33 ± 13.53	31.17 ± 16.74	13.00 ± 10.91	6.71 ± 5.71c	0.0111
Distal	34.33 ± 13.87	25.00 ± 10.81	13.86 ± 6.4a	17.71 ± 7.70b	0.0065
Entire colon	54.83 ± 24.79	56.17 ± 11.51	29.00 ± 16.29bd	24.43 ± 7.66bc	0.0018

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