In contrast, as shown in Figure 2C, flow cytometric analyses from 4 separate experiments revealed intracellular staining of TrkB in the majority of cells for both DLBCL cell lines, but TrkB membrane detection was observed only for ∼20% SUDHL6 cells (17%±7% of positive cells). This evidence concerns the gene NTRK2 and diffuse large B-cell lymphoma.