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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Pharmacol Biochem Behav. 2011 Jun 6;99(4):525–531. doi: 10.1016/j.pbb.2011.05.024

Fig. 2.

Fig. 2

Mean duration of immobility (s) in the forced swim task of aged, adult (20–28 months of age) intact female (left panel) and male (right panel) C57/BL6 mice (administered vehicle control (white bar)) or P (black bar) tasks (n=4 in each conditions). Progesterone significantly decreased immobility. * denotes a main effect of progesterone to decrease immobility compared to vehicle. *** denotes a significant interaction between sex and progesterone condition, that was due to progesterone reducing depressive behavior most among male mice (p<0.05).