LacZ reporter expression profiles in the Ntng2 -BAC deletion series. Brains from transgenic mice at P21 carrying Ntng2-BAC-LacZ (column A), Ntng2-Del I (B), II (C), III (D), IV (E), I–IV (F), VI (G), and I–IV&VI (H) reporter constructs were sliced at 400 μm and stained for LacZ activity. Images of the stained slices are arranged from anterior (Top) to posterior (Bottom). Red circles indicate the regions evaluated for LacZ activity. Abbreviations of the brain regions are the same as those in Figure 1. The (+) and (−) symbols indicate that the given construct induced expression of LacZ at a frequency over the criterion (50% of transgenic founders) or not. Scale bar: 2.0 mm for all panels.