: a person who opposes a person or group in authority. He was a rebel against the school administration. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. : a person who does not obey rules or accept normal standards of behavior, dress, etc. He is a typical teenage rebel.
antibody-antigen complex. a complex formed by the combining of antibody and antigen. Called also immune complex. Golgi complex. a complex cellular organelle involved in the synthesis of glycoproteins, lipoproteins, membrane-bound proteins and lysosomal enzymes. See also golgi apparatus.
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.his region is known as the hypervariable region. Each of these variants can bind to a different antigen. This enormous diversity of antibody paratopes on the antigen-binding fragments allows the immune system to recognize an equally wide variety of antigens.