mGluR5 deletion does not alter dendritic complexity. Representative images of Golgi-stained isolated neurons in tangential sections through layer 4 of the primary somatosensory cortex in Mglur5+/+ (A), Mglur5+/− (B), and Mglur5−/− (C) animals. Example traces of Neurolucida reconstructed neurons from Mglur5+/+ (n = 17) (D), Mglur5+/− (n = 18) (E), and Mglur5−/− (n = 18) (F) animals. Scholl analysis showed no difference in dendritic branching as assessed by the number of crossings (G). Total dendritic length (H) and number of bifurcations (I) were also comparable in all groups analyzed. Scale bars: A–C, 50 μm; F (for D–F), 20 μm. wt = Mglur5+/+, het = Mglur5+/−, and ko = Mglur5−/−.