Question

What is cyclosporin-A and what is its use?

Hint:

Cyclosporin-A prevents organ transplant rejection by suppressing immunity.

Answer 1

Step 1: Definition.
Cyclosporin-A is an immunosuppressive drug obtained from the fungus \textit{Trichoderma polysporum}.
Step 2: Mode of action.
It inhibits activation of T-lymphocytes, thereby suppressing cell-mediated immune responses.
Step 3: Use.
It is mainly used in organ transplantation to prevent graft rejection. It helps the body accept transplanted organs like kidney, liver, and heart.
Step 4: Conclusion.
Cyclosporin-A is an immunosuppressant drug widely used in transplantation medicine.