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Immunofluorescence of nNOS in the rat spinal cord of the control (A, ×200), and of the 72 hr group (B, ×200), 72 hr after spinal cord contusion. nNOS activity was observed in both the control and experimental groups. In the experimental group, nNOS immunoreactivity is observed in the neuronal cell body 24 hr post-SCI and in the cell processes at 72 hr post-SCI.
