Figure 8

OR-specific subpopulations are regionally restricted within the olfactory nerve pathway. Sagittal sections of P2-lacZ/M72-GFP embryos. (A-C) Z-series projections taken from sagittal sections of E16 heterozygous P2-lacZ (red) and M72-GFP (green) mice. (A) Sagittal low-powered montage allowing visualization of two subpopulations of OSNs, P2 (red) and M72 (green) axons in the olfactory nerve; (A') high-magnification image of the boxed area in (A). (B) Sagittal low-powered montage of P2/M72 axons within the nerve. (C) Coronal low-powered image demonstrating the clustering of P2 axons and M72 axons; (C') high-magnification image of the boxed area in (C). An orientation compass is shown in (A) for (A, B) and in (C) for (C, C'). Scale bars = 25 μm.