NBP reduces lesion volume and motor neuron loss after SCI. At 7 d after SCI, sections of injured spinal cord were assessed via HE staining, Nissl staining, and immunofluorescence staining for NeuN. A. HE staining results for the sections of injured spinal cord in the sham, SCI, and SCI+NBP groups. B. Quantification analysis of lesion cavity area in the SCI and NBP groups. Data represent Mean values ± SEM, #P < 0.05 versus the SCI group, n = 5 per group. C. Nissl staining results in the ventral horn of the spinal cord in the different groups at 7 d after SCI. D. Quantification analysis of the number of Nissl-stained cells. Data represent Mean values ± SEM, **P < 0.01 versus the sham group, and #P < 0.05 versus the SCI group, n = 5 per group. E. Immunofluorescence staining for NeuN in the different groups. F. Quantification analysis of the number of NeuN-positive cells. Data represent Mean values ± SEM, **P < 0.01 versus the sham group, and #P < 0.05 versus the SCI group, n = 5 per group.