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IgG4 immunostain; 200X objective.

IgG4 immunostain; 200X objective.
#00062993
Author: Vanessa Kimiko Martin Hoang, DO,MMSc; Le Aye, DO
Category: Myeloid Neoplasms and acute leukemia (WHO 2016) > Mastocytosis > Systemic Mastocytosis (SM)
Published Date: 04/13/2020

Increased IgG4 positive plasma cells (IgG4: IgG ratio >40%).