{"term":{"id":"13399","title":"lymphocyte","longtitle":"IUPAC Gold Book - lymphocyte","doi":"10.1351\/goldbook.13399","code":"13399","status":"current","definitions":[{"id":1,"text":"Small leucocyte found in the blood, lymph, and lymphoid tissues that has a single round nucleus and little or no granulation in the cytoplasm.","notes":{"1":"Lymphocytes may be either B cells, which produce humoral immunity, or T cells, which produce cell-mediated immunity (CMI).","2":"Lymphocytes constitute about a quarter of the total leucocytes in the blood stream but occur in large numbers in the lymph nodes and other lymphatic tissue."},"links":[{"term":"B cells","url":"https:\/\/goldbook.iupac.org\/terms\/view\/12937"},{"term":"T cells","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13724"},{"term":"cell-mediated immunity (CMI)","url":"https:\/\/goldbook.iupac.org\/terms\/view\/12995"},{"term":"humoral immunity","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13236"},{"term":"leucocyte","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13379"},{"term":"lymph nodes","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13397"},{"term":"lymphatic tissue","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13396"},{"term":"lymphoid tissues","url":"https:\/\/goldbook.iupac.org\/terms\/view\/13414"}],"sources":["PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1204 (https:\/\/doi.org\/10.1351\/PAC-REC-11-06-03)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/13399\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/13399\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/13399\/plain"},"citation":"Citation: 'lymphocyte' 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.13399","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":"2026-06-28T12:53:20+00:00"}}