This antibody conjugate is suitable for intracellular staining of human whole blood (using BD™ Phosflow Lyse/Fix Buffer) and peripheral blood mononuclear cells (using BD Cytofix™ Fixation Buffer or BD™ Phosflow Fix Buffer I). Any of the three BD™ Phosflow permeabilization buffers may be used.
Sample Volume
20 μL
Restrictions
For Research Use only
Buffer
Aqueous buffered solution containing BSA and ≤0.09 % sodium azide.
Preservative
Sodium azide
Precaution of Use
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Storage
4 °C
Storage Comment
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The antibody was conjugated to Alexa Fluor® 488 under optimum conditions, and unreacted Alexa Fluor® 488 was removed.
Nozawa, Abe, Ohno, Fukuhara, Wakasa: "Production of two monoclonal antibodies (FB1 and FB21) useful for the identification of human B lymphocytes in formalin-fixed, paraffin-embedded tissues." in: The Journal of pathology, Vol. 173, Issue 4, pp. 347-54, (1994) (PubMed).
Target
CD20 (MS4A1)
(Membrane-Spanning 4-Domains, Subfamily A, Member 1 (MS4A1))
The H1(FB1) antibody reacts with a cytoplasmic domain of CD20, a 33-37-kDa tetraspan phosphoprotein that is expressed on B lymphocytes from the pre-B stage and most malignant B cells and is lost during plasma cell differentiation. Low level CD20 expression is observed on a subset of normal circulating T lymphocytes, and CD20-positive T-cell lymphomas have been reported. The CD20 molecule is associated with membrane lipid raft domains, acts as a channel for calcium ions, and is involved in regulation of B cell activation and survival. The cytoplasmic domain regions are serine and threonine rich and contain multiple phosphorylation consensus sequences. This antibody is routinely tested by flow cytometric analysis. Synonyms: Cytoplasmic domain