in human il-2 assay , sez 627 cells were found to be superior to murine ctll-2 cells with respect to their unresponsiveness to phorbol 12-myristate 13-acetate ( pma ) , and species specificity for human il-2 , as well as better cryopreservation , although they were less sensitive to il-2 than ctll-2 cells .
C0086418
human
C0021756
il-2