Is to identify in blood or lymph. Or is to identify body cells that have not been invaded by pathogens. Or, to identify chemical mediators of immunity. Or, to identify pathogens in interstitial fluid. Or, to identify the activated macrophages.
One of the monokines, IL-1, is released from activated macrophages and damaged endothelium. IL-1 is the initial signal for activation of T-cells, neutrophils (in local inflammation). IL-1 stimulates bone marrow, acute-phase protein synthesis and is responsible for the induction of… Full Answer