1 Note which cartridges need to be replaced and press OK. 2  Then select Yes, replace now and press OK. 3  If you are replacing a cartridge before you see a message on the LCD screen, press the left or right arrow buttons, select Setup OK Maintenance OK Ink Cartridge Replacement OK.
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.
antigen. Any substance that can stimulate an immune response in the body and can react with the products of that response, that is, with specific antibodies or specifically sensitized T lymphocytes, or both. Antigens include bacteria, foreign substance (e.g. dust mite, grass, pollen of trees), toxins and viruses.onjugated antigen antigen produced by coupling a hapten to a protein carrier molecule through covalent bonds; when it induces immunization, the resultant immune response is directed against both the hapten and the carrier.