This article needs to be updated. The reason given is: no files for 2006 are listed at the cited source, but files for 2013 are there; NLM releases this information annually. Please help update this article to reflect recent events or newly available information. (February 2020)

The following is a partial list of the "A" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM).

This list continues the information at List of MeSH codes (A02). Codes following these are found at List of MeSH codes (A04). For other MeSH codes, see List of MeSH codes.

The source for this content is the set of 2006 MeSH Trees from the NLM.

MeSH A03 – digestive system

MeSH A03.159 – biliary tract

MeSH A03.159.183 – bile ducts

MeSH A03.159.439 – gallbladder

MeSH A03.556 – gastrointestinal tract

MeSH A03.556.124 – intestines

MeSH A03.556.249 – lower gastrointestinal tract

MeSH A03.556.500 – mouth

MeSH A03.556.750 – pharynx

MeSH A03.556.875 – upper gastrointestinal tract

MeSH A03.620 – liver

MeSH A03.620.150 – intrahepatic bile ducts

MeSH A03.620.575 – round ligament of liver

MeSH A03.734 – pancreas

MeSH A03.734.414 – islets of langerhans

MeSH A03.734.540 – exocrine pancreas

MeSH A03.734.667 – pancreatic ducts

The list continues at List of MeSH codes (A04).

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