Fig. 2From: Pleural effusion as an initial manifestation in a patient with primary pulmonary monoclonal B-cell lymphocyte proliferative diseasePhenotypic lymphocyte screening by flow cytometry of blood showed monoclonal B-cell lymphocyte proliferation. Lymphocytes (p1, red): 10% of nucleated cells; B cells: 6% of lymphocytes, expressing CD19, CD20 and CD38, partially expressing CD5, and restrictedly expressing kappa light chainBack to article page