RGMb deletion does not alter development of DRG neurons as revealed by in situ hybridization. A, RGMb is widely expressed in small and large DRG neurons of adult C57BL/6 mice as demonstrated by coexpression with the sensory neuron markers peripherin, TrkA and NF-200, visualized by fluorescent immunohistochemistry (right) and in situ hybridization (left). Arrows indicate cells that express peripherin, TrkA, or NF-200 (white arrows) and RGMb (yellow arrows). Scale bar, 100 μm. B, In situ hybridization revealed no difference between RGMb KO and WT LM in the expression of a variety of key markers of sensory neurons in P0 DRG.