A and B, fluorescence images of GAD immunostaining showing no obvious changes in the number of GABAergic synapses between control (A) and after CTZ treatment (B). Scale bar, 10 μm. C, quantified data indicating a similar number of GABAergic synapses per 100 μm dendritic length in control (26.9 ± 1.7, n = 14) and after chronic CTZ treatment (29.6 ± 2.1, n = 14) (P > 0.3).