male rats were treated with daily subcutaneous injections ( 3 micrograms/kg ) of cholecystokinin octapeptide ( cck-op ) , a synthetic cck analogue , for 2 , 4 , 7 , and 14 days , while control rats were injected with saline over the same intervals .
C0037167
cholecystokinin octapeptide
C2917328
cck analogue