it turned out that all membrane fractions from a variety of t lineage cells ( mutant el4 , parent el4 , bw5147 , p198 thymomas , normal t cells ) and b lineage cells ( bcl1 lymphoma , x63ag8 cytoplasma , normal b cells ) exhibited similar b cell stimulating activity in both assays .
C0007603
membrane
C0010834
cytoplasma