| Code | CSB-RA004888MA4HU |
| Size | $49.9 |
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| Application | Recommended Dilution |
|---|---|
| FC | 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 maintaining humoral immune responses. This transmembrane glycoprotein is expressed throughout B cell development, from early pro-B cells through mature B cells, making it an invaluable target for immunology research, B cell malignancy studies, and therapeutic development. Defects in CD19 have been linked to common variable immunodeficiency, underscoring its importance in understanding antibody deficiency disorders.
This recombinant monoclonal antibody, clone 12G5, offers researchers the reproducibility and consistency that sequence-defined production provides. Unlike traditional hybridoma-derived antibodies, recombinant technology ensures that each lot performs identically to the last, eliminating the variability that can compromise longitudinal studies or multi-site collaborations. The human IgG1 isotype format makes this antibody particularly suitable for applications requiring Fc-mediated detection or functional studies.
Validated for flow cytometry applications, this antibody demonstrates clear positive staining of human B cells. Testing on Raji cells, a well-established Burkitt lymphoma B cell line, shows distinct separation between CD19-positive populations and isotype control, confirming specific target recognition when used at recommended dilutions of 1:50 to 1:200. The affinity-purified preparation in a glycerol-based PBS buffer ensures stability and consistent performance across experiments.
Researchers investigating B cell biology, lymphoma characterization, stem cell differentiation, or immune cell phenotyping will find this antibody a reliable tool for their flow cytometry workflows. Its specificity for human CD19 supports studies ranging from basic immunological research to translational applications in hematological malignancies.
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