We have three different anti-mGluR antibodies, each of which binds to a specific peptide sequence(s) present in different sets of mGluR gene family members. The ER2/3 antibody represents sequences found in both mGluR2 and mGluR3. (Note that this product cannot distinguish between these two receptors.) It comprises two antipeptide antibodies generated against overlapping sequences specific to the mGluR2 and mGluR3 gene products but not found in other mGluR gene family members. This antibody has been validated for immunohistochemistry and immunocytochemistry using mouse brain sections and cultured neuroblastoma cells as well as in rat brain sections.