What is the difference between anti-ssa and anti-ssb antibodies?

SSB: anti-Sjogren's syndrome b antibody

SSA SSB antibodies are generally antibodies against Sjogren's syndrome, and anti-SSA and anti-SSB antibodies are positive, which are common in Sjogren's syndrome, but can also be found in lupus erythematosus, mixed connective tissue disease, scleroderma and so on.

Antibody (immunoglobulin is not only antibody) is a large Y-shaped protein secreted by plasma cells (effector B cells), which is used by the immune system to recognize and neutralize foreign substances such as bacteria and viruses. It only exists in the blood and other body fluids of vertebrates, and on the surface of the cell membrane of its B cells. Antibodies can recognize the unique characteristics of specific foreign objects, which are called antigens.