Select brain structures that express ER subtypes and are involved in the effect of estrogens on ingestive behaviors. The ER subtype mRNA expressed in each area of rat brain is indicated by the color of the structure. SFO only expresses ERα (blue), whereas ERβ is the only ER subtype found in the DR (red). The MnPO, OVLT, mPOA, LH and ARC express both ERα and ERβ (purple). ERβ and GPER-1 are expressed in the PVN and SON (orange). ERα, ERβ and GPER-1 are expressed in the NTS (green).