Lupus Arthritis. Lupus arthritis causes pain, stiffness, swelling, tenderness and warmth in your joints. The joints most often affected are the ones farthest from the middle of the body, such as fingers, wrists, elbows, knees, ankles and toes.
Each antibody binds to a specific antigen; an interaction similar to a lock and key. An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses.The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the variable region.n antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses.
Antibody production. Antibodies are produced by lymphocytes, which are formed in lymph nodes. Lymphocytes produced antibodies in response to the presence of pathogens such as bacteria. This is because alien cells have chemicals called antigen on their surface.A different antibody is produced for each antigen.The antibodies make bacteria clump together in preparation for action by phagocytes, or neutralise toxins produced by the bacteria.his is because alien cells have chemicals called antigen on their surface. A different antibody is produced for each antigen. The antibodies make bacteria clump together in preparation for action by phagocytes, or neutralise toxins produced by the bacteria.