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Biotin dextran-amine (BDA) tracing of rat corticospinal tract (CST). Fluorescent anterograde tract tracing with BDA and immunofluorescence staining to analyze nerve fibers in the CST using fluorescence microscopy. Bar=50 μm. * p<0.05 and ** p<0.01 compared with rats subjected to SCI alone; # p<0.05 and ## p<0.01 compared with rTMS.
