Term: vaccine https://doi.org/10.1351/goldbook.V06585 Definition: An agent containing antigens produced from killed, attenuated or live pathogenic microorganisms, synthetic peptides or by recombinant organisms, used for stimulating the immune system of the recipient to produce specific antibodies providing active immunity and/or passive immunity in the progeny. Related Terms: 1) antigens (http://doi.org/10.1351/goldbook.A00394). 2) antibodies (http://doi.org/10.1351/goldbook.A00384). 3) peptides (http://doi.org/10.1351/goldbook.P04479). Source: PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 167 (https://doi.org/10.1351/pac199264010143) Citation: 'vaccine' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.V06585 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. 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.