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.
A lamp chimney force pump Replace the piston in the lift pump explained above with a one-hole stopper. Fit the piston rod by the hole. Fit the bottom of the chimney with a two-
Explain the Hyposecretion or Hypothyroidism during Infancy Decreased secretion of thyroid hormone results in the development of the condition known as cretinism. There is a lac
Social Role of Communication: Social relevance of communication follows from the economic and political role of communication. We, in this country, have often talked about u
Hydrophobicity of Amino Acids Hydrophobicity of amino acids and also of peptides and proteins may be determined by relative solubility of amino acid in water and in a less
Describe the factors which decide the broad area of scientific activity/
To show that expired air contains carbon dioxide The two flasks are linked so that when you breathe by the T piece, all the air bubbles by the lime water in the flasks. One tub
Explain in brief about the Crop Rotation 1. Deep rooted legumes may be grown periodically over all fields. 2. There is more continuous vegetative cover and probably less e
Use of Fire Extinguishers : We know that one type of fire extinguisher cannot serve the purpose on all kinds of fire. In this subsection you will study about the use of different
Why chemical fertilizers should be supplemented by organic manure? Exclusive use of chemical fertilizer will eliminate organic matter and thus organisms from the soil. Important
Moisture evaporates from soil Fill a flower pot with moist soil and place it on a pair of scales. Either balances the pot of soil with weights or observe its weight. Observe it
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