these results indicate that ( i ) ncb-20 cells possess at least two species of serotonin receptors , which independently regulate cellular functions , ( ii ) activation of adenylate cyclase does not directly affect membrane potential or acetylcholine release , and ( iii ) serotonin-dependent cell depolarization does not affect cyclic amp or cyclic gmp synthesis in the cell lines tested .
C0007613
cellular functions
C0007634
cell