the relative frequency of ctl precursors ( ctlp ) able to expand in vitro in the presence of sv40-transformed stimulator cells and interleukin 2 and exhibit lytic activity against h-2b cells expressing full length t antigen ranged from 1/1900 to 1/15,000 in the popliteal lymph node and from 1/8000 to 1/55,000 in the spleen .
C1536403
ctl
C0007634
cells