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. 2020 Dec 10;137(17):2337–2346. doi: 10.1182/blood.2020009499

Figure 5.

Figure 5.

Tissue-infiltrating CD8+ T cells in patients with HLH are highly activated, IFN-γ–producing T cells. (A) Representative FACS plots of CD8+ T cells comparing blood and CSF or bone marrow in samples obtained concurrently from 3 different patients. (B) Cumulative data for the indicated markers in samples of CSF (CS), lymph node (LN), or bone marrow (BM) from 10 patients with HLH. CD38high/HLA-DR+ cells are displayed as a percentage of CD3+/CD8+ cells, the other markers are displayed as a percentage of CD8/CD38high/HLA-DR+ cells. (C) Representative FACS plots and cumulative data of intracellular cytokine staining for IFN-γ, as a percentage of CD3+/CD8+ cells in either CSF or bone marrow. (D) Comparison of IFN-γ staining of CD8+/CD38high T cells after stimulation of concurrent peripheral blood (BL) and bone marrow samples from 2 patients.