Figure 3. Frequency of B lymphocytes, plasma cells, and NK cells.

Frequency of CD19⁺ B lymphocytes, CD19⁺CD38⁺ plasma cells, CD19⁺CD27⁺ memory B cells, and CD56⁺ NK cells does not significantly differ from healthy controls (HC). Healthy controls are depicted in the first column of each dotplot, patients with PML in the second. NK = natural killer; PML = progressive multifocal leukoencephalopathy.