Researchers at Worrell are seeking adolescents (ages 12 – 17) with the following conditions: neuromyelitis optica spectrum disorder (NMOSD), myasthenia gravis (gMG), myelin oligodendrocyte glycoprotein antibody disease (MOG-AD), or autoimmune encephalitis (AE), to participate in a research study to test the safety and efficacy of a new syringe device being developed to administer a drug to . . .