Fig. 3.

Expression of β4 in human cortex. Emulsion autoradiograms of sections from human cortex, labeled with human β4 antisense (β4 AS, left panel) and sense (β4 S,middle panel) probes, were viewed under dark-field illumination (10× magnification). The antisense probe shows β4 expression throughout the cortical layers, whereas the sense probe shows only background. A bright-field image of the same tissue (β4 AS, right panel) shows β4 expression (arrowheads) in cortical neurons (40× magnification).