Fig. 3

Electron micrographs showing typical vGluT1 immunoperoxidase labeled terminals in the contralateral side VP (a) and RTN (c) and ipsilateral side VP (b) and RTN (d). In the contralateral side, vGluT1 labeled terminals (T) contain densely packed vesicles and form clear asymmetrical synapses (indicated by arrows) with postsynaptic dendrites (D) (note the prominent postsynaptic densities associated with the synapses). In ipsilateral side, the labeled terminals have less defined irregular shapes and form less clear synaptic contacts with postsynaptic dendrites (D). Scale bar = 0.5 μm