Composite map of mOR256-17 glomerular positions in adult β3GnT2 mice. The position of glomeruli in one OB of WT (A) and β3GnT2−/−(B) mice was plotted as a two dimensional map. The OB was flattened and unrolled from the dorsal midline (arrows), and the location of mOR256-17 glomeruli plotted as the relative circumferential distance from the dorsal midline in serial 50 mm coronal sections (horizontal lines) beginning at the anterior extent of the OB. The distance in microns from the anterior tip of the OB is at the right of each plot. Note that the plot of the mutant OB is smaller than that of the WT OB along the anterior-posterior axis.