Leiobunum longipes: radioautographic localization of 5-hydroxytryptamine.
D000818:Animals; D001097:Arachnida; D001345:Autoradiography; D001923:Brain Chemistry; D007422:Intestines / Q000032:analysis*; D009489:Neurosecretion; D012701:Serotonin / Q000302:isolation & purification*
D012701:Serotonin