Cholecystokinin is a peptide hormone. Cholecystokinin, as a hunger suppressant, inhibits food intake and stimulates the digestion of fat and protein. Cholecystokinin can be used for the research of gastrointestinal system.
References:
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[2]. R A Liddle, et al. Cholecystokinin cells. Annu Rev Physiol. 1997;59:221-42.
[3]. Dockray, Graham J. Cholecystokinin. Curr Opin Endocrinol Diabetes Obes. 2012 Feb;19(1):8-12.