A.Acetylcholine, epinephrine, norepinephrine, somatostatin
B.Dopamine, serotonin, histamine, substance-P, sympathin
C.Thyroxine, gastrin, secretin, enterokrinin, cholecystokinin
D.All of these
A.Acetylcholine, epinephrine, norepinephrine, somatostatin
B.Dopamine, serotonin, histamine, substance-P, sympathin
C.Thyroxine, gastrin, secretin, enterokrinin, cholecystokinin
D.All of these