Overlapping mRNA expression patterns of ERC1b, ERC2, and syntenin-1 in the brain. A–C, mRNA distribution patterns. Sections from postnatal day 3 (P3), P7, P12, and adult (6 weeks) rat brains were probed with ERC1b, ERC2, and syntenin-1 cRNAs. Scale bar, 6 mm. OB, Olfactory bulb; Ctx, cerebral cortex; Hc, hippocampus; MHb, medial habenular nucleus of the thalamus; Cb, cerebellum.