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Description
Alexa Fluor® 700 Mouse Anti-Human CD19 Antibody (S-3522)Product Specification Host Mouse Antigen CD19 Synonyms B lymphocyte antigen CD19; B lymphocyte surface antigen B4; Differentiation antigen CD19; T cell surface antigen Leu 12 Location Cell membrane Accession P15391 Clone Number S 3522 Antibody Type Mouse mAb Isotype IgG1,k Application FCM Reactivity Hu Positive Sample human peripheral blood lymphocytes Purification Protein G Concentration 0. 2 mg ml Conjugation Alexa Fluor 700 Physical Appearance
Product Specification
| Host | Mouse |
| Antigen | CD19 |
| Synonyms | B-lymphocyte antigen CD19; B-lymphocyte surface antigen B4; Differentiation antigen CD19; T-cell surface antigen Leu-12 |
| Location | Cell membrane |
| Accession | P15391 |
| Clone Number | S-3522 |
| Antibody Type | Mouse mAb |
| Isotype | IgG1,k |
| Application | FCM |
| Reactivity | Hu |
| Positive Sample | human peripheral blood lymphocytes |
| Purification | Protein G |
| Concentration | 0.2 mg/ml |
| Conjugation | Alexa Fluor® 700 |
| Physical Appearance | Liquid |
| Storage Buffer | PBS, 1% BSA, 0.3% Proclin 300 |
| Stability & Storage | 12 months from date of receipt / reconstitution, 2 to 8 °C as supplied |
Dilution
| application | dilution | species |
| FCM | 1.25μl per million cells in 100μl volume | Hu |
Background
CD19, also known as B-lymphocyte antigen CD19 or B-Lymphocyte Surface Antigen B4, is a 95 kDa type I transmembrane glycoprotein that belongs to the immunoglobulin superfamily and is encoded by the CD19 gene. It is primarily expressed on all B lineage cells, from early pro-B cells to plasma cells, and plays a crucial role in B cell development, activation, and signaling. As a co-receptor, CD19 enhances signaling through the B cell receptor (BCR) complex, lowering the threshold for B cell activation and promoting B cell proliferation and differentiation. It forms a complex with CD21, CD81, and other proteins, which helps in the recognition of antigens tagged with complement and amplifies BCR signaling. CD19 is also a biomarker for B cell-related diseases and a target for immunotherapies, including monoclonal antibodies and CAR-T cell therapies, due to its consistent expression on B cells and B cell malignancies.
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