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Figure 1. Octopamine inhibition of aversive responses in C.elegans mimics noradrenergic anti-nociception in mammals. 5-HT, serotonin; CCK, cholecystokinin; DYN, dynorphin; ENK, encephalin; G, glutamate; GABA, γ-aminobutyric acid; NE, norepinephrine; NPFF, neuropeptide FF; NT, neurotensin; OA, octopamine; P, peptide.
