Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
Shipping
Frozen
Form
Liquid
Calculated MW
61 kDa
Clonality
Polyclonal
Isotype
IgG
抗原与靶点信息
Antigen & Target Information
Gene Name
CD19
Protein Name
B-lymphocyte antigen CD19
Background
CD19 (B-lymphocyte antigen CD19) belongs to immunoglobulin superfamily and acts as co-regulator for B-cell receptor signaling. CD19 exhibits B-lineage-restricted expression from early B-cell progenitors up to pre-plasma cell stage. As BCR co-receptor, CD19 assembles with CD21 and CD81 to amplify BCR downstream signaling cascades, governing B-cell proliferation, differentiation and antibody production to sustain humoral immunity. CD19 deficiency leads to impaired humoral immune response. B-cell malignancies including B-ALL and diffuse large B-cell lymphoma frequently retain CD19 expression, making it a canonical target for CAR-T therapy. CD19 is applied for B-lymphocyte subset profiling, B-cell-associated hematological malignancy diagnosis and immunological research.