anergy

https://doi.org/10.1351/goldbook.12875
Lack of an immune response, usually taken as lack of response to common recall antigens.
Note: The failure of B or T cells to proliferate in response to defined autoantigens (clonal anergy) is a primary mechanism of self-tolerance.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1123 [Terms] [Paper]