Fig. 4From: Lymphocyte senescence in COPD is associated with decreased histone deacetylase 2 expression by pro-inflammatory lymphocytes a There was a significant correlation between the percentage of CD28nullCD8+ T cells co-expressing HAT.IFNγ and IFNγ. b A representative dot plot showing an increased percentage of HAT+ CD28nullCD8+ T cells co-expressing IFNγ + (23 %) in a COPD patient compared with HAT + CD28+ CD8+ T cells (9 %)Back to article page