MISCELLENOUS
VACCINATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Th, Tc
|
|
|
Tc. Th
|
|
|
Th1, Th2
|
|
|
Ts, Th
|
Detailed explanation-1: -CD4 T lymphocytes (CD4 cells) help coordinate the immune response by stimulating other immune cells, such as macrophages, B lymphocytes (B cells), and CD8 T lymphocytes (CD8 cells), to fight infection. HIV weakens the immune system by destroying CD4 cells.
Detailed explanation-2: -Panel A: The two main T cell populations are CD4+ and CD8+ cells. The CD4 are helper T cells and are shown highlighted with the CD4+ subsets Th1, Th17, Th2, Th3, and Tr1 and shown below are the CD8 cytotoxic T cells (faded).
Detailed explanation-3: -The TCR repertoire serves as a reservoir of TCRs for recognizing all potential pathogens. Two major types of T cells, CD4+ and CD8+, that use the same genetic elements and process to generate a functional TCR differ in their recognition of peptide bound to MHC class II and I, respectively.