| Code | CSB-RA004888MA2HU |
| Size | US$210 |
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| Application | Recommended Dilution |
|---|---|
| IF | 1:50-1:200 |
CD19 serves as a critical B lymphocyte surface marker that plays an essential role in modulating B cell receptor signaling thresholds and immune response regulation. As a defining antigen for B cell lineage identification, CD19 has become indispensable in immunology research, particularly in studies examining B cell development, lymphoma characterization, and emerging CAR-T cell therapeutic approaches targeting hematological malignancies.
This recombinant monoclonal antibody, clone 12G9, offers researchers the reproducibility advantages inherent to recombinant technology. Because the antibody sequence is defined and production occurs through controlled recombinant expression systems, you can expect consistent performance across different lots, eliminating the variability concerns that can complicate long-term studies or multi-site collaborations. The antibody was raised in mouse host against recombinant human CD19 protein and demonstrates reactivity with human samples.
Validation testing confirms reliable performance in immunofluorescence applications, with recommended working dilutions of 1:50 to 1:200. Immunofluorescence staining of HeLa cells at 1:25 dilution demonstrated clear signal when cells were fixed in 4% formaldehyde and blocked with 10% normal goat serum, with overnight primary antibody incubation at 4°C followed by FITC-conjugated secondary detection. The antibody is also validated for ELISA applications, providing flexibility across different experimental workflows.
Supplied in liquid format with a glycerol-based PBS buffer system, this antibody is ready for immediate use in your experiments. The unconjugated format allows you to select secondary detection systems that best suit your specific instrumentation and multiplexing requirements. Whether investigating B cell biology, characterizing lymphoid populations, or exploring stem cell differentiation pathways, this antibody provides a dependable tool for your immunology research.
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