Figure 5
![Figure 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2202-9-97/MediaObjects/12868_2008_Article_780_Fig5_HTML.jpg)
Immunohistochemistry using an antibody directed against the GPR125 protein (green). GPR125 was again localized to the choroid plexus cells using the epithelial cell-specific marker cytokeratin (red). This specific staining was observed in sections from the brain of a 3 week old rat, thus confirming expression of GPR125 in pre-adolescence.