Entero-oxyntin explained

Entero-oxyntin is a hormone released from intestinal endocrine cells which stimulates gastric acid secretion in the stomach. It has been isolated from animals^[1] and is hypothesised to exist in humans.

References

1. https://www.ncbi.nlm.nih.gov/pubmed/6843113, Walker WA, Strodel WE, Eckhauser FE, Heldsinger A, Vinik AI. J Surg Res. 1983 May;34(5):486-92.