LAG-3 is enriched within the CD4⁺ T cells expressing intracellular CTLA-4^hi and GITR^hi. (A) Representative data from an HL patient in remission showing LAG-3 staining and (B) HL patient PBMC samples (n = 14) showing mean fluorescence intensity for LAG-3 on CD4⁺ T cells with intracellular CTLA-4^lo and CTLA-4^hi and GITR^lo and GITR^hi cells. P values were generated using the Wilcoxon matched pairs test.