Title: germ-free animal Long Title: IUPAC Gold Book - germ-free animal DOI: 10.1351/goldbook.15735 Status: current Definition Animal grown under sterile conditions in the period of postnatal development: Such animals are usually obtained by Caesarean operation and kept in special sterile boxes in which there are no viable microorganisms (sterile air, food, and water are supplied). Source - PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1228 (https://doi.org/10.1351/pac200779071153) Other Outputs - html: https://goldbook.iupac.org/terms/view/15735/html - json: https://goldbook.iupac.org/terms/view/15735/json - xml: https://goldbook.iupac.org/terms/view/15735/xml Citation: Citation: 'germ-free animal' 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.15735 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: 2026-05-14T02:41:09+00:00