CD45 Antibody [LT40] (APC) | 99-244

CD45 Antibody [LT40] (APC) | 99-244 | Gentaur UK, US & Europe Distribution

Host: Mouse

Reactivity: Chicken

Homology: N/A

Immunogen: Chicken bursal lymphocytes

Research Area: Immunology, Neuroscience, Signal Transduction, Stem Cell

Tested Application: Flow

Application: CD45 Antibody [LT40] for use in flow cytometry assays.

Specificiy: CD45

Positive Control 1: N/A

Positive Control 2: N/A

Positive Control 3: N/A

Positive Control 4: N/A

Positive Control 5: N/A

Positive Control 6: N/A

Molecular Weight: N/A

Validation: N/A

Isoform: N/A

Purification: N/A

Clonality: Monoclonal

Clone: [LT40]

Isotype: IgM

Conjugate: APC

Physical State: Liquid

Buffer: Supplied in PBS/NaN3 and a stabilizing agent

Concentration: 0.1 mg/mL

Storage Condition: Store vial at 2-8˚C

Alternate Name: N/A

User Note: Optimal dilutions for each application to be determined by the researcher.

BACKGROUND: Chicken CD45 is a transmembrane glycoprotein expressed on all leukocytes. B lineage cells in the bursa of Fabricius express the 215 kDa isoform while T lineage cells bear the 190 kDa variant. These high molecular weight molecules have intrinsic phosphotyrosine phosphatase activity characteristic of mammalian CD45. Levels of CD45 expression detected by the monoclonal antibody LT40 in the avian thymus are heterogeneous with approximately 90% of thymocytes expressing fourfold higher levels of surface CD45 (CD45hi) than do the remaining 10% (CD45low) of thymocytes. The CD45low population contains exclusively thymocytes with the CD3-CD4-CD8low phenotype characteristic of the immediate precursors to the CD3-CD4+CD8+ thymic population which are CD45hi. This shift from low to high levels of surface CD45 expression is concomitant with the transition from CD4-CD8low to CD4+CD8+ and before the expression of CD3. The ability of the monoclonal antibody LT40 to discriminate this CD45low subpopulation provides a suitable marker for the CD3-CD4-CD8low immediate precursors to the CD3-CD4+CD8+ thymocytes.