tolerogen

https://doi.org/10.1351/goldbook.13746
Antigen used to induce tolerance.
Note: Induction depends strongly on the circumstances of administration (e.g., route and concentration) in addition to any inherent property of the molecule.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1254 [Terms] [Paper]