“…To date, inclusion of the 5-HT 3 A subunit appears imperative for 5-HT 3 receptor function. Agonists CSTI-300 (Partial agonist) [1025] CSTI-300 (Partial agonist) [1025] Selective agonists -meta-chlorphenylbiguanide [90,241,659,828,829], 2-methyl-5-HT [90,241,659,828], SR57227A [316] -Rat, 1-phenylbiguanide [90] Antagonists -vortioxetine (pK i 8.4) [63], metoclopramide (pK i 6-6.4) [126,481] Selective antagonists -palonosetron (pK i 10.5) [840], alosetron (pK i 9.5) [466], (S)-zacopride (pK i 9) [126], granisetron (pK i ∼8. 6-8.8) [481, 828], tropisetron (pK i 8.5-8.8) [659,828], ondansetron (pK i ∼ 7.8-8.3) [126,481,828] Channel blockers picrotoxinin (pIC 50 4.2) [1198], bilobalide (pIC 50 2.5) [1198], ginkgolide B (pIC 50 2.4) [1198] picrotoxinin (pIC 50 5) [1197], TMB-8 (pIC 50 4.9) [1163], diltiazem (pIC 50 4.7) [1197], bilobalide (pIC 50 3.3) [1197], ginkgolide B (pIC 50 3.1) [1197] Labelled ligands -[ 3 H]ramosetron (Antagonist) (pK d 9.8) [828], [ 3 H]GR65630 (Antagonist) (pK d 8.6-9.3) [466,659], [ 3 H]granisetron (Antagonist) (pK d 8.9) [126,481], [ 3 H](S)-zacopride (Antagonist) (pK d 8.7) [934], [ Comments: Quantitative data in the table refer to homooligomeric assemblies of the human 5-HT 3 A subunit, or the receptor native to human tissues.…”