in addition to the antiviral properties it shares with the alpha- and beta-interferons , gamma-interferon ( ifn-gamma ) , a lymphokine secreted by activated t cells , activates macrophages , stimulates b cells , increases fibroblast and endothelial cell resistance to many nonviral intracellular parasites and modulates cell-surface proteins central to immune cell regulation .
C0015980
beta-interferons
C0024432
macrophages