Figure 3. Effects of lenti-viral delivery to the hippocampus of the gene encoding ERα (Lenti-ERα) or a control virus (Lenti-Cherry) to aging ovariectomized rats on number of total errors in a spatial memory radial-maze task when various delays were imposed between the 4^th and 5^th arm choices.

(A) Mean number of total errors in the first eight arm choices (+SEM) averaged across delays. ^# P = .077 vs. Lenti-Cherry. (B) Mean number of total errors of first eight arm choices (+SEM) at each delay.