AQP4 and nervous system disorder: Autoimmune antibodies to various protein targets, such as myelin oligodendrocyte glycoprotein (MOG) [73,74,75], major basic protein (MBP) [76,77,78], dipeptidyl-peptidase-like protein 6 (DPPX) [79,80], and aquaporin-4 [81,82], have been described and are even applied in the diagnosis of certain neurological disorders [83,84].