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Electron micrographs showing asymmetric (white arrows) or symmetric (black arrows) synapses formed by VAChT-positive terminals (VT) onto dendrites singly labeled by immunogold-silver for TH (TH-d) or GABA (GABA-d). The GABA-d in B receives additional synaptic input from a GABA-labeled terminal (GABA-t). The TH-d in C is shown in a serial section in D to verify the TH labeling. Scale bar, 0.33 μm.
