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Magnified view of merged CTb (green) and CGRP (red) labeled neurons from the C7 DRG from injury, sham, and normal rats showing punctate fluorescence of CTb within the cell body. In panel (A), the arrow indicates a CTb-labeled neuron that is not positive for CGRP labeling. Scale bar in (A) is 50μm. CTb, cholera toxin subunit B; CGRP, calcitonin gene-related peptide; DRG, dorsal root ganglion.
