The rabbit monoclonal antibody R2L specifically binds to the scFv region of a CD19-specific mouse monoclonal antibody (mAb, clone FMC63). CD19 antigen is a B-cell specific cell surface antigen, which is expressed in all B-cell lineage malignancies and normal B-cells. The scFv region of FMC63 has been used to develop CD19-specific chimeric antigen receptor (CAR) T cells utilized in clinical trials.

Flow cytometric analysis of anti-CD19 CAR expression on human T cells. Human T cells were transduced with lentivirus encoding anti-CD19 CAR and cultured for 7 days. 2×105 cells were stained for the expression of anti-CD19 CAR with Rabbit Anti-Mouse FMC63 scFv Monoclonal Antibody (R2L), Alexa Fluor 647 (Product No. 203401, right panel). Non-transduced T cells were used as a control for gating of CAR expression (left panel).
| Product No. | 203401 |
| Size | 25 tests |
| Recommended Vol. per Test | 1 μL |
| Antibody Types | Monoclonal |
| Antibody Format | Whole IgG |
| Clone | R2L |
| Immunogen | scFv region of a CD19-specific mouse mAb clone FMC63 |
| Conjugate | Alexa Fluor 647 |
| 651/667nm | 651/667nm |
| Host Species | Rabbit |
| Reactivity | Mouse |
| Storage Buffer | Aqueous buffered solution containing protein stabilizer and ≤0.05% ProClin 300 |
| Storage conditions | 2-8°C, store in dark |
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