PATHOLOGY

Previous
Next

PATHOLOGY MCQ

LYMPHO RETICULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Class MHC ____ proteins bind fragments of antigens they engulfed on the outside of the infected cell to get T Cell attention
A
1
B
2
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -CD4 is expressed on helper T cells and binds to class II MHC proteins, whereas CD8 is expressed on cytotoxic T cells and binds to class I MHC proteins (Figure 24-55).

Detailed explanation-2: -MHC Class II molecules are a class of major histocompatibility complex (MHC) molecules normally found only on professional antigen-presenting cells such as dendritic cells, mononuclear phagocytes, some endothelial cells, thymic epithelial cells, and B cells. These cells are important in initiating immune responses.

Detailed explanation-3: -On the other hand, MHC class II molecules are found only on antigen-presenting cells, such as macrophages, dendritic cells, and B cells. These molecules present peptides from extracellular pathogens to the immune system.

There is 1 question to complete.
Previous
Next