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.
Antibodies are small proteins that circulate in the bloodstream. They are part of the immune (defence) system and are sometimes called immunoglobulins. They are made by B lymphocytes (a type of white blood cell).Antibodies attach to proteins and other chemicals in the body, which they recognise to be foreign (not normally found in the body). The foreign proteins and chemicals that antibodies attach to are called antigens.ntibodies are small proteins that circulate in the bloodstream. They are part of the immune (defence) system and are sometimes called immunoglobulins. They are made by B lymphocytes (a type of white blood cell).