Figure. Groups 1–3, patients tested, and test results (viral PCR and antibodies) Groups 1–3, patients tested, and test results (viral PCR and antibodies) Ab = antibody; AMPA-R = amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptor; ANA = antinuclear antibody; CBA = cell-based assay; CSFs = CSF specimens; EBV = Epstein-Barr virus; GABAB-R = γ-aminobutyric acid type B receptor; GPC = gastric parietal cell; HHV-6 = human herpes virus 6; HSV = herpes simplex virus; IFA = immunofluorescence assay; IgG = immunoglobulin G; NMDA-R = NMDA receptor; PCR = polymerase chain reaction; SMA = smooth muscle antibody; UNA = uncharacterized neural antibody. Jenny J. Linnoila et al. Neurol Neuroimmunol Neuroinflamm 2016;3:e245 © 2016 American Academy of Neurology