the two important differences to be described are , ( i ) that in these experiments where the parent t cell lines were generated with thymocytes as presenting cells , splenocytes were not suitable as a source of antigen-presenting or stimulator cells and ( ii ) semipurified forms of il-2 , specifically that derived from el4 lymphoma cells , resulted in a much reduced cloning frequency and rate of t cell growth compared with cruder mixtures such as that derived from mitogen-stimulated splenocytes .
C0007634
cells
C1515126
t cell growth