{"term":{"id":"13271","title":"immune system","longtitle":"IUPAC Gold Book - immune system","doi":"10.1351\/goldbook.13271","code":"13271","status":"current","definitions":[{"id":1,"text":"Integrated network of organs, glands, and tissues that has evolved to protect the body from foreign substances, including bacteria, viruses, and other infection-causing parasites and pathogens.","notes":{"1":"The immune system may produce hypersensitivity reactions that, in the extreme, can be fatal. If the immune system misidentifies normal body components as foreign, this leads to autoimmune disorders, such as systemic lupus erythematosus (SLE), in which the body destroys its own constituents."},"links":[{"term":"autoimmune","url":"https:\/\/goldbook.iupac.org\/terms\/view\/12918"},{"term":"hypersensitivity","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13241"},{"term":"systemic lupus erythematosus (SLE)","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13710"}],"sources":["PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1184 (https:\/\/doi.org\/10.1351\/PAC-REC-11-06-03)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/13271\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/13271\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/13271\/plain"},"citation":"Citation: 'immune system' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.13271","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-06-28T12:25:42+00:00"}}