Cluster of Differentiation 19 (CD19) also described as B-lymphocyte antigen CD19 is a transmembrane protein. It is expressed B lineage cells where it has two major roles. Firstly it decreases the threshold for B-cell receptor signalling pathways by working alongside CD19/CD21 complex and secondly, it recruits cytoplasmic signalling proteins to the membrane by acting as an adaptor protein.

ELISA kit information:

• Reactivity: Human
• Sample Type: Serum, Tissue Homogenates, Biological Fluids, Plasma
• Sensitivity: 0.094 ng/ml
• Target: Cluster Of Differentiation 19, CD19, B-lymphocyte antigen, CVID3, B4, T-Cell Surface Antigen Leu-12