antitoxin

https://doi.org/10.1351/goldbook.12901
Antibody specific for exotoxins produced by certain microorganisms such as the causative agents of diphtheria and tetanus.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1127 [Terms] [Paper]