| Code | CSB-RA004888MA3HU |
| Size | US$210 |
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| Application | Recommended Dilution |
|---|---|
| FC | 1:50-1:200 |
CD19 serves as a critical B lymphocyte surface antigen that plays an essential role in B cell development, activation, and signaling. As a defining marker of the B cell lineage, CD19 has become indispensable in immunology research, particularly in studies of B cell malignancies, immunodeficiencies, and the development of targeted immunotherapies. Its prominence as a therapeutic target, notably in CAR-T cell approaches, has made reliable CD19 detection increasingly important for both basic research and translational applications.
This recombinant monoclonal antibody, clone 1G9, offers researchers the consistency and reproducibility that sequence-defined production provides. Unlike traditional hybridoma-derived antibodies, recombinant technology ensures that each lot delivers identical performance characteristics, eliminating the variability that can compromise longitudinal studies or multi-site collaborations. The antibody is produced with a human IgG1 isotype and undergoes affinity chromatography purification, resulting in a highly specific reagent for human CD19 detection.
Validation studies using flow cytometry demonstrate clear performance with Raji cells, a well-established human B cell lymphoma line. The staining protocol, performed at 2 µg per million cells, showed distinct positive signal compared to control conditions, confirming the antibody's utility for identifying CD19-positive cell populations. For flow cytometry applications, dilutions ranging from 1:50 to 1:200 are recommended, allowing researchers flexibility to optimize detection based on their specific experimental conditions and instrumentation.
Supplied in a liquid format containing PBS with 50% glycerol and preserved with Proclin 300, this antibody is ready for immediate use in immunology and stem cell research applications where precise B cell identification is essential.
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