Fig. 3

(A): Anti-AMPAR antibodies in the serum were positive. (B): Positive control in the serum was also observed. (C): Anti-AMPAR antibodies in the cerebrospinal fluid (CSF) were positive. (D): Positive control in the CSF was also observed. The titers of antibodies in both the CSF and serum were measured at 1: 320 using an indirect immunofluorescence assay of cell-based transfection, with an original magnification of 100× (KingMed Diagnostics, Jinan, China)