has_participant has participant circadian rhythm biological_process GO:0050895 Any biological process in an organism that recurs with a regularity of approximately 24 hours. GO:0007623 Wikipedia:Circadian_rhythm circadian response circadian process response to circadian rhythm biological_process high affinity nerve growth factor receptor (human) thymidylate synthase (human) cyclin-dependent kinase 4 (human) sodium-dependent serotonin transporter (human) 5-hydroxytryptamine receptor 7 (human)