Expression data of Adhesion GPCRs. Relative expression of rat (r) and mouse (m) Adhesion GPCRs: BAI1, BAI2, BAI3, GPR56 and GPR64 obtained with quantitative real-time PCR. Error bars display standard deviation. The coronal sections of rat brain, marked SL2–SL8, are displayed in Additional File 1. For comparison, in situ hybridization data from mouse (0-no expression, 1-low expression and 2-high expression)  as well as mouse and human EST data  are displayed on the right side of the figure.