The CD3−, CD7+ events are displayed in these histograms. Note that almost all of the NK cells in the illustrated DLBCL are of the more mature CD56dim, CD16/57+ type (84.3% of total NK cells), whereas, in the other illustrated B-NHL, the NK cells are almost all of the less mature CD56bright, CD16/57− type (FL, 96.8%; CLL/SLL, 96.3%; and marginal zone lymphoma, 96.7% of total NK cells). Abbreviation: MZL, marginal zone lymphoma.