Lateral sagittal 20μm autoradiograph showing CB1 mRNA expression (left) and corresponding anatomical schematic (right). Areas showing high levels of expression are highlighted on the schematic. Hp: Hippocampus, M: Mesopallium, N: Nidopallium, AI: Arcopallium Intermedium, SGFS: Stratum Griseum et Fibrosum, SAC: Stratum Album Centrale. Scale bar = 1mm.