Effector Phase of Type IV - 2
•UT-DTH  cells secrete a variety of cytokines that include the following:
•eIL-3
•eGM-CSF
•eINF-(
•eTNF-$
•eMIF
•chemotactic for macrophages
•hematopoietic stimulus for monocytes & neutrophils
•affects permeability of endothelial cells and activates macrophages
•migration-inhibition factor inhibits macrophages from leaving area of DTH reaction