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Fig. 3 | Molecular Brain

Fig. 3

From: Prior observation of fear learning enhances subsequent self-experienced fear learning with an overlapping neuronal ensemble in the dorsal hippocampus

Fig. 3

Experimental procedures for visualizing neurons activated during observation and self-experience of fear conditioning. Doxycycline was removed from the diet of Obs + FC, Obs, FC, and Obs + dFC groups 4 days before the first behavioral task. The next day, mice underwent fear conditioning or context exposure with doxycycline. The Dox ON group observed and received fear conditioning with doxycycline. Mice in the Cage group were kept in their homecages on the same schedule of doxycycline treatment to that of the Obs + FC group. Cage: n = 4, Dox ON: n = 4, Obs + FC: n = 5, Obs: n = 5, FC: n = 5, Obs + dFC: n = 5

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