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.
Explain the Nuclei or Ganglia Deep within the cerebral hemispheres are groups of nerve cells called nuclei or ganglia which act as relay stations, where impulses are passed fro
define gravitational PE
Explain Folic acid Folic acid is a water soluble B-vitamin that helps build healthy cells. Along with iron, this vitamin is crucial during pregnancy as you may already know
How to Calculate the Mass of Atoms in AMU's ? To calculate the masses of atoms we need only know the numbers of the various subatomic particles within the nucleus. For our purp
Maintain the Calcium Levels of Body– Function of Kidney Maintain the body’s calcium levels. Along with parathormone and calcitriol, kidney helps the body to absorb calcium.
Define age related changes in Excretory System There is a progressive decrease in the number and size of nephrons fiasic unit of the kidney). There is a 10% decrease in renal p
Isomers are different compounds' having same molecular form but different structural forms. a) Glucose and Fructose b) Glucose and Galactose
A self-starting siphon Secure a piece of glass or plastic tube about 2.5 cm in diameter and 8 to 10 cm in length. Fit single end with a one-hole stopper, carrying a short lengt
Explain the Organs of the Urinary System The figure illustrates the organs of the urinary system. As is evident, the organs of the urinary system consist of 2 kidneys, 2 uret
Management of Forest Resources: Considering the ever growing demand of wood and realising the importance of conserving our forest resources, it has become necessary to find alt
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