Altered morphology of reactive astrocytes in Nestin-Stat3^−/− mice 7 d after wound stab. (A) 7 d after a superficial midline incision was made along the dorsal column of the spinal cord at T10 level, the injured areas can be easily localized on axial sections of spinal cords (dashed lines). Bars, 200 µm. (B) Note the difference of morphology in WT and Nestin-Stat3^−/− reactive astrocytes adjacent to the injury (confocal analysis). The localization of the fields captured is indicated by the boxes in A. Bar, 20 µm.