Figure 1. Dynamics of the coefficient of homeostatic stability (CHS) in female (A) and male (B) rats maintained at various light regimens. ^ The difference with the relevant parameter in the group LD is significant, р<0,05; * The difference with the parameter at the age of 3 months in the same group is significant, р<0,05 (Wilcoxon-Mann-Whytney test).