previous studies have shown that a murine t-cell hybrid ( b151k12 ) produces factor ( s ) that ( i ) induce immunoglobulin secretion by the b-cell leukemia line bcl1 and secondary anti-2,4-dinitrophenyl igg synthesis in vitro by dinitrophenyl-primed b cells ( trf activity ) and ( ii ) cause proliferation of the bcl1 cells [ b-cell growth factor ii ( bcgf-ii ) activity ] .
C0023434
b-cell leukemia
C0004561
b cells