BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
These cells are responsible for identifying the “enemy” in an immune response.
|
|
Killer-T Cells
|
|
|
B Cells
|
|
|
Helper-T Cells
|
|
|
Antibodies
|
Explanation:
Detailed explanation-1: -Helper T-cells play the main role in coordinating an immune response once a foreign enemy has been spotted. If a T-cell in the thymus acquires a protein marker known as CD4, it becomes a helper T-cell.
Detailed explanation-2: -Cytotoxic CD8 T cells carry out their killing function by releasing two types of preformed cytotoxic protein: the granzymes, which seem able to induce apoptosis in any type of target cell, and the pore-forming protein perforin, which punches holes in the target-cell membrane through which the granzymes can enter.
There is 1 question to complete.