 positive cells was calculated by averaging the total numbers of each region per each section/region. Values are expressed mean ± SEM. ^+^, *p*\< 0.00 *versus*normal group; \*, *p*\< 0.00 and \*\*, *p*\< 0.00 *versus*control group (ANOVA test with a Fisher\'s post hoc test)](0000-0000-0-00-0){#F0}  