Fig. 1From: Autoimmune glial fibrillary acidic protein astrocytopathy presented as isolated area postrema symdrome: a case reportFigures of negative control cell lines. Negtive control in serum (A and B) and CSF (C and D) by transfected cell-based assay. A and C show plasmid transfection, while B and D show antigen-antibody reaction. (magnification: 200×)Back to article page