CD19

CD19 is a protein found on the surface of B cells, a type of white blood cell part of the immune system. It plays a crucial role in helping these cells recognize and respond to infections by acting as a marker that signals their presence. CD19 is important in the development and function of B cells, and it's a target for certain therapies, particularly in treating blood cancers like leukemia and lymphoma. Because it is consistently present on B cells, CD19 helps identify and destroy cancerous cells while sparing healthy ones.