autoantibody

https://doi.org/10.1351/goldbook.12913
Immunoglobulin (Ig) antibody that is directed against the organism’s own antigen(s).
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1129 [Terms] [Paper]