How does a Candidate Peptide Become a Hormone?
Peptides, like people, have identity crises. We ask for them, as we do for ourselves, what is my role? Once we have isolated and chemically identified a peptide, we inject it and observe its various biological actions. This tells us the various things it can do. Only when we are satisfied that we have determined which of these things it actually does do when it is endogenously released under physiological conditions do we confer the title of hormone on it. A hormone is a peptide with a physiological role.
KeywordsVasoactive Intestinal Peptide Serum Gastrin Exogenous Hormone Gastrointestinal Hormone Candidate Peptide
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