Name the source of cyclosporin - A . How does - this bioactive molecule function in our body ?

Explanation

### Step-by-Step Solution:

1. **Identify the Source of Cyclosporin A**:
- Cyclosporin A is derived from a specific fungus. The source of Cyclosporin A is the fungus **Trichoderma polysporum**.

2. **Understand the Function of Cyclosporin A**:
- Cyclosporin A is classified as a **bioactive molecule**, which means it has a significant effect on living organisms and is beneficial for human health.
- Its primary function in the human body is as an **immunosuppressant**. This means it works to suppress or reduce the activity of the immune system.
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