SEARCH Articles Figures Tables 3 Adrenergic receptor antagonist 31-selective 5-hydroxytryptamine selective antagonists Delta-selective opioid receptor antagonists ERP-Selective Antagonists ERa-Selective Antagonists Kappa-selective opioid receptor antagonists NR2B selective antagonists P Selective antagonist P2 selective antagonists SELECT 5-selective antagonist Selective CB2 Receptor Antagonists Selective CBi Receptor Antagonists Selective receptor antagonist Subtype-selective antagonists