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Main lymphoid cells involved in immune reaction in COPD and lung cancer. APC—antigen presenting cell, Bregreg—regulatory B cell, COPD—chronic obstructive pulmonary disease, CTLA-4—cytotoxic T cellll antigen-4, DC—dendritic cell, DC-reg—regulatory DC cell, IL—interleukin, IFN-γ—interferon γ, M—macrophage, PD-1—programmed death-1, TGF-β—transforming growth factor β. Treg-regulatory T cell, VEGF-vascular endothelial growth factor.
