has_participant has participant signal transduction serotonin receptor signaling pathway biological_process GO:0007210 The series of molecular signals generated as a consequence of a serotonin receptor binding to one of its physiological ligands. serotonin receptor signalling pathway 5-hydroxytryptamine receptor 1A (human) 5-hydroxytryptamine receptor 2A (human) 5-hydroxytryptamine receptor 2C (human) 5-hydroxytryptamine receptor 2B (human) 5-hydroxytryptamine receptor 6 (human)