“Interestingly, … for AA with 5-HT was, also, blocked by the … blockers cyproheptadine (IC50=22.0±7 μmol/L), ketanserin (IC50=152±23 μmol/L), phospholipase C (PLC) inhibitor (U73122; IC50=6.1±0.8 … mitogen activated protein kinase (MAPK) inhibitor (PD98059; IC50=3.8±0.5 μmol/L).”