13474 IUPAC Gold Book - mucosa-associated lymphoid tissue 10.1351/goldbook.13474 13474 current initialism: MALT synonyms: bronchus-associated lymphoid tissue (BALT), nasal-associated lymphoid tissue (NALT) 1 Secondary lymphoid tissue present in the surface mucosa of the respiratory tract and bronchus (BALT), gastrointestinal tract (GALT), nasal passages (NALT), larynx (LALT), conjunctiva (CALT), and genitourinary tract, and in the skin sub-epidermis (SALT). MALT plays an important part in limiting entry of pathogens through the mucosal surfaces. GALT https://goldbook.iupac.org//terms/view/13189 Secondary lymphoid tissue https://goldbook.iupac.org//terms/view/13663 mucosa https://goldbook.iupac.org//terms/view/13473 PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1215 (https://doi.org/10.1351/PAC-REC-11-06-03) https://goldbook.iupac.org/terms/view/13474/html https://goldbook.iupac.org/terms/view/13474/json https://goldbook.iupac.org/terms/view/13474/plain Citation: 'mucosa-associated lymphoid tissue' 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.13474 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-07-12T15:52:21+00:00