CD4 and classic Hodgkin lymphoma: EBV+ cHL and EBV- cHL patients exhibit similar frequencies of CD4+ T cells, CD8+ T cells, TCR δ-1+ (γδ﻿﻿﻿-1) T cells and TCR δ-2+ (γδ﻿﻿﻿-2) T cells (Supplementary Fig. 3B-E).