Antigenic Variation - ț̢
Change in the surface ANTIGEN of a microorganism. There are two different types. One is a phenomenon, especially associated with INFLUENZA VIRUSES, where they undergo spontaneous variation both as slow antigenic drift and sudden emergence of new strains (antigenic shift). The second type is when certain PARASITES, especially trypanosomes, PLASMODIUM, and BORRELIA, survive the immune response of the host by changing the surface coat (antigen switching). (From Herbert et al., The Dictionary of Immunology, 4th ed)
Antigens - ț̢
Substances that are recognized by the immune system and induce an immune reaction.
Synonyms : Antigen
Antigens, Archaeal - ț̢
Substances of archaeal origin that have antigenic activity.
Synonyms :
Antigens, Bacterial - ț̢
Substances elaborated by bacteria that have antigenic activity.
Synonyms :
Antigens, CD - ț̢
Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation.