Research Support, Non-U.S. Gov't Journal Article AAb-negative AAb-positive Autoantibodies Autoantibodies (AAb) CXCL13 CXCR5 protein, human Case Reports Class Ia Phosphatidylinositol 3-Kinase Cytotoxic lymphocytes (CTLs); EC 2.7.1.- EC 2.7.1.137 EC 3.1.3.48 Epitopes, T-Lymphocyte FOXP3 protein, human Follicular Treg cells Forkhead Transcription Factors Germinal Centers Hyper-IgM syndrome Letter Memory CD8(+) T cells; PD-1 PDCD1 protein, human PI3KR1 PIK3R1 protein, human Programmed Cell Death 1 Receptor Protein Tyrosine Phosphatase, Non-Receptor Type 22 Ptpn22 protein, mouse Ptpn22;