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. Author manuscript; available in PMC: 2009 May 1.
Published in final edited form as: Neurobiol Learn Mem. 2008 Mar 3;89(4):513–521. doi: 10.1016/j.nlm.2008.01.008

Figure 1.

Figure 1

Mean (± sem) percentage of time spent exploring the novel object by vehicle-administered WT or estrogen receptor β knockout (βERKO) mice, 17β-E2-administered WT or βERKO mice, or DPN-administered WT or βERKO mice. ** indicates a significant (P ≤ 0.05) interaction between genotype and hormone condition. Chance levels of responding are considered when mice spend 50% of the total exploration time investigating each object, as indicated by dashed line.