in a series of investigations by our group and other authors the following immunological parameters have been considered : t cell activation induced by different pathways ( i.e . autologous stimulation , pha , anti-cd3 , -cd2 and -cd28 monoclonal antibodies ) , and lymphokine production ( i.e . il-1 , il-2 and gamma-ifn ) .
C1155065
t cell activation
C1367475
cd2