Multiplex Detection of Immunoglobulins Uncovers Intrathecal IgA Elevation in Multiple Sclerosis. - Apeltsin, Leonard; Asokan, Sakthi; Freitas, Brendan; Karekar, Krish; Guzman, Samuel; Alvarez, Enrique; Yu, Xiaoli (Cells (2073-4409), 2026)