. . "C0004359"^^ . "C20972"^^ . "Amino Acid, Peptide, or Protein"^^ . "An endogenous antigen that stimulates the production of autoantibodies, as in an autoimmune reaction. Autoantigens are proteins, nucleic acids, or complexes of both.NCI" . "Autoantigen"^^ . "AutoantigenPTNCI" . "Autoantigen"^^ . . "Autoantigen"^^ . . "Immunologic Factor"^^ .