Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain Major Histocornpatability Complex (MHC)
Major histocompatability complex is also known as the Human Leukocyte Antigen (HLA). MHC molecules are important components of the immune response. They permit cells that have been invaded by an infectious organism to be detected by the cells of the immune system called T-lymphocytes or T-cells. The MHC molecules do this by offering fragments of proteins (peptides) belonging to the invader on the surface of the cell. The T-cell recognizes the foreign peptide attached to the MHC molecule and binds to it, an action which stimulates the T-cell to either destroy or cure the infected cell. The MHC, therefore, is a set of genes that code for cell surface glycoproteins. These glycoproteins mark the body cells as 'self' and are divided into two main classes - class I MHC molecules are found on the surface of almost every cell of the body.
Class ll MHC molecules are confined to a few specialized cell types, such as macrophages, B-cells and activated T-cells. Each MHC antigen combination forms a unique complex that is recognized by specific antigen receptors on T-cells as 'self'. T-cell surface proteins CD4 and CD8 greatly enhance the interaction between an antigen presenting cell (APC) and killer T-cell and between AF'C and helper T-cell, respectively. The primary immunological function of MHC molecules, therefore, is to bind and "present" antigenic peptides on the surfaces of cells for recognition (binding) by the antigen- specific T-cell receptors (TCRs) of lymphocytes. The other specific defence mechanism in our body is the antibodies. Let us learn about their role in the immune system and their interaction with antigens.
Please furnish me with the basic restoration plan for the Marshall wetland located in Liberia. This wetland is of mangrove type, has invasive species (c. Odorata, has a physical p
in a reaction 5.3g of sodium carbonate reacted with 6g of ethanic acid. theproducts were 2.2 g of carbon dioxide , 0.9g water and 8.2 g of sodium ethanoate, show that these observa
Explain the Somatosensory System The somatosensory system consists of: 12 pairs of cranial nerves, and 31 pairs of spinal nerves All our conscious awaren
The digestive system is made up of two groups of organs: Alimentary tract, which includes mouth, pharynx, oesophagys, stomach, small intestine, large intestine, appendix
The ventricular system While the ventricular system is naturally not involved in cognitive processing since it consists of cavities filled with cerebrospinal fluid, it is good to
facts
Determine in brief about the Black soils These soils have been formed mainly under semi -arid conditions and are derived from a number of rock formations. Basaltic trap is the
Explain the Counter Current Mechanism? What is counter current mechanism? Counter current mechanism is the mechanism by which the kidneys produce osmotically concentrated urine
Explain the process of leaching- Temperature High temperatures hinder the process of leaching and cause an upward movement of soluble salts. Wherever, moisture conditions are
Australopithecus-The Transitional Human Forms By about two million years ago, there were several well established hominid ancestors in Africa. One of the earliest of these i
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd