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.
An antibody is a protein used by the immune system to identify and neutralise foreign objects like bacteria and viruses. Each antibody recognises a specific antigen unique to its target. Production of antibodies is referred to as the humoral immune system.he immune system could be described as a sensory organ much like vision, hearing and touch. Instead of recognising light, sound waves or large objects, the immune system recognises molecular shapes-only a few amino acids in length.