|
|
Encyclopedia: Antigen processing
Antigen processing is a biological process that prepares antigens for presentation to special cells of the immune system called T lymphocytes. This process involves two distinct pathways for processin...
en.wikipedia.org/wiki/Antigen_processing |
|
|
Transporter associated with antigen processing (TAP) is a member of the ATP-binding-cassette transporter family. It delivers cytosolic peptides into the...
|
|
|
through specific antigen recognition of the invader, clonal expansion and B cell differentiation you acquire an effective number of plasma cells all secreting the same needed antibody. That antibody then binds to the bacteria making them easier to ingest by white cells.
|
|
|
Foreign antigen A different process occurs if the antigen originates outside the cell. Phagocytes such as macrophages ingest foreign particles such as viruses and bacteria by endocytosis.
|
|
|
Endogenous antigen; Class I antigen processing pathway; Proteosome; Transporter; Exogenous antigen; Class II antigen processing pathway; Invariant chain; Self MHC restriction; Positive selection; Negative selection;
|
|
|
At the core of this immune system element is the Major Histocompatibility Complex (MHC). Located on human chromosome 6, the MHC is a highly polymorphic set of genes that encode for molecules essential to self/non-self discrimination and antigen processing and presentation.
|
|
|
(Dendritic cells can also present intact antigen directly to B cells. In this case, the engulfed antigen is not degraded in The Solution: TAP (= transporter associated with antigen processing). The remaining steps of antigen processing occur by the same class II pathway described above for macrophages producing...
|
|
|
A different process occurs if the antigen originates outside the cell. Phagocytes such as macrophages ingest foreign particles such as viruses and bacteria by endocytosis. Animation: Antigen Processing; (See related pages); Home > Chapter 22 > Animation: Antigen Processing...
|
|
|
Antigen Content and Quality The content of the antigen determines the effectiveness of the vaccine. The size, complexity, stability, and foreignness all effect antigenicity. Antigens that are more complex stimulate the immune system better than those simpler ones which are degraded before the immune system has time...
|
Copyright © 2009, Dictionary.com, LLC. All rights reserved.
