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. 2014 Oct 9;8:112. doi: 10.3389/fnana.2014.00112

Figure 5.

Figure 5

Electron photomicrographs showing the synaptic connections in the RVM revealed using the triple-labeling method. An NT-IR axon terminal (Ax-NT) (A) or a BDA-labeled axon terminal (Ax-BDA) (B) synapses on a dendrite that is retrogradely labeled with HRP (Den-HRP) and immunopositively stained for NTR2. The synaptic contact between an NT/BDA double-labeled axon terminal (Ax-BDA+NT) and an HRP-labeled dendritic profile (Den-HRP) is also shown (C). The arrowheads indicate the post-synaptic membranes. Mit: mitochondria.