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.
The best definition of an antigen is A. A chemical that combines with antibodies B. A chemical that elicits an antibody response and can combine with these antibodies C. A protein that combines with antibodies D. Something foreign to the body E. A pathogen.B.ntigen-antibody binding may result in all of the following except A. Agglutination of the antigens B. Complement activation C. Neutralization of the antigen D. Opsonization E. interleukin 2 production.