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. Author manuscript; available in PMC: 2019 Nov 22.
Published in final edited form as: Expert Rev Gastroenterol Hepatol. 2019 Nov 8;13(11):1089–1105. doi: 10.1080/17474124.2019.1685871

Figure 13:

Figure 13:

The minor papilla (yellow arrow) is easily identified after spraying the duodenal mucosa with methylene blue and administration of intravenous secretin. The pancreatic juice flow results in a zone of central clearing (white arrow).