Fluoxetine treatment during maternal separation enhances cell proliferation in the dentate gyrus. BrdU-immunostaining and methyl green counterstaining were done on sections obtained one day after the last day of the injections from each group; pups kept with their mothers (a) and pups with maternal separation (b), which have received daily injections of BrdU (50 mg kg −1 ) and saline, and fluoxetine-treated pups with maternal separation (c) which have received daily injections of BrdU (50 mg kg −1 ) and fluoxetine (5 mg kg −1 ). All injections were given for 7 days after postnatal day 14. n = 9 in each group. Scale bar represents 100 m. For further information on this topic, please see the article by HJ Lee et al on pages 725-728.

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