we analyzed various cellular functions in the pathway of t cell activation and found that in patients with immunodeficiency , ( 1 ) their m phi usually could process and present antigens to normal t cells , ( 2 ) their t cells did not proliferate even in the presence of normal antigen-pulsed m phi , ( 3 ) il-2 production by t cells was deficient , and ( 4 ) exogenous il-2 restored cml activity in cells of most patients early after grafting but not in cells of most patients with chronic gvhd .
C0007613
cellular functions
C0007634
cells