Loss of TrkB.T1 does not affect hippocampus neurite morphology. A, Representative examples of Golgi-stained dentate gyrus neurons from postnatal day 60 wild-type (+/+; left) and TrkB.T1-deficient (−/−; right) mice. Sholl analyses of the number of intersections (B) in hippocampal dentate gyrus neurons. All results are presented as means ± SEM determined by analysis of six mice per genotype and 25 neurons per mouse. *p < 0.01.