title: Absence of brain specific benzodiazepine receptors in cyclostomes and elasmobranchs.
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier; D001923:Brain Chemistry; D003975:Diazepam / Q000378:metabolism*; D004284:Dogfish / Q000378:metabolism; D005399:Fishes / Q000378:metabolism*; D006196:Hagfishes / Q000378:metabolism; D007798:Lampreys / Q000378:metabolism; D011955:Receptors, Drug / Q000032:analysis*; D011957:Receptors, Opioid / Q000032:analysis; D012474:Salmon / Q000378:metabolism; D013045:Species Specificity
chemical_list: D011955:Receptors, Drug; D011957:Receptors, Opioid; D003975:Diazepam