Figure 1.

Gpr37l1 is expressed in astrocytes and OPs. Cells expressing Gpr37l1 transcripts were distributed throughout all regions of the adult forebrain including hippocampus (a, c, e), and cortex (b, d, f). Confocal fluorescent double ISH showed expression of Gpr37l1 in Fgfr3‐positive astrocytes in hippocampus (a) and cortex (b). ISH for Gpr37l1 followed by immunohistochemistry demonstrated that Gpr37l1 expression co‐localized with OLIG2 (c, d) and PDGFRA (e, f). White arrows: double‐positive cells; yellow arrows: single OLIG2‐ or PDGFRA‐positive cells. DG: dentate gyrus, MC: motor cortex. Scale: 50 µm