The CD19 protein forms a complex with CD21, CD81, and CD225 in the membrane of mature B cells. Together with the B-cell antigen receptor, this complex signals the B cell to decrease its threshold for ...

Individuals who have abnormally low levels of immune molecules known as antibodies have an increased susceptibility to infection with certain types of bacteria. By analyzing one such person, ...

Tetraspanin proteins form signaling complexes between them and with other membrane proteins and modulate cell adhesion and migration properties. The surface expression of several tetraspanin antigens ...

CD19, also known as Cluster of Differentiation 19, is a cell surface protein belonging to the immunoglobulin superfamily. It serves as a crucial marker for B cells, playing a pivotal role in the human ...