The rabbit monoclonal antibody R19M 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 cell line Jurkat cells. Jurkat cells were transduced with lentivirus encoding anti-CD19 CAR and cultured. 2×105 cells were stained for the expression of Rabbit Anti-Mouse FMC63 scFv Monoclonal Antibody, PE (Product No. 200105, right panel). Non-transduced Jurkat cells were used as a control for gating of CAR expression (left panel).
| Product No. | 200105 |
| Size | 25 tests |
| Recommended Vol. per Test | 1 μL |
| Antibody Types | Monoclonal |
| Antibody Format | Whole IgG |
| Clone | R19M |
| Immunogen | scFv region of a CD19-specific mouse mAb clone FMC63 |
| Conjugate | PE |
| Excitation/Emission Max | 488/578nm,561/578nm |
| 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 |
©2026 Cytoart. All Rights Reserved.