text:  ID4+/+TCL1-tg spleen CD19+ B cells collected from 3 mice 1 ID4+/+TCL1-tg spleen CD19+ B cells strain: F1 littermate of TCL1 (C3H/B6) and ID4+/+ (CD1) mice; genotype/variation: ID4+/+TCL1-tg; tissue type: spleen; cell type: CD19+ B; age of the mice: 1 month old