title: How cells respond to signals.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology; D002450:Cell Communication; D019204:GTP-Binding Proteins / Q000502:physiology; D007328:Insulin / Q000502:physiology; D007473:Ion Channels / Q000502:physiology; D010716:Phosphatidylinositols / Q000502:physiology
chemical_list: D007328:Insulin; D007473:Ion Channels; D010716:Phosphatidylinositols; D019204:GTP-Binding Proteins; D002118:Calcium