Crocin III is a crocetin from saffron (Crocus sutivus L.). Crocetins inhibit cell growth of tumor cells and has anti-inflammatory activity. Crocins serve as spices and coloring agents.

H-Gly-Pro-OH is a dipeptide composed of glycine and proline, and is an end product of collagen metabolism that is further cleaved by prolidase.

Somatostatin (GHIH), a peptide hormone, regulates the endocrine system and affects neural transmission and cell proliferation by interacting with G-protein-coupled somatostatin receptors and inhibiting the release of multiple secondary hormones. Somatostatin inhibits secretion of insulin and glucagon.