Question

Which of the following statements about MHC is correct.

• A. It is a group of proteins called the Major Histocompatibility Complex
• B. It helps the T cells in self non-self recognition
• C. It is present on both healthy cells and infected cells
• D. It is present only on some cells of the body

Answer 1

Answer: (A), (B), (C)

The correct options are
A

It is a group of proteins called the Major Histocompatibility Complex

B

It helps the T cells in self non-self recognition

C

It is present on both healthy cells and infected cells

The efficient working of our immune system depends on its property of self non-self recognition. It is important that the T cells destroy only virus infected cells and not the healthy ones.The MHC is a cluster of proteins that is present in each and every cell of the body. It presents cellular proteins on the surface. If there is a virus inside the cells. MHC presents the viral proteins too on the cell surface. Hence, the T cell is easily able to identify the infected cells form the healthy ones.