Vivia Biotech’s immunophenotyping assays enable detailed characterization of B-cell subsets in autoimmune disease samples. This includes naïve, transitional, memory, plasmablast, plasma cell, and double-negative populations, as well as activated B cells, defined by specific phenotypic profiles. The ability to resolve these subsets under native conditions provides essential information on immune dysregulation and supports both mechanistic evaluation and therapeutic targeting at the cellular level.