Name the Human protein , which is used to treat emphysema .

Explanation

**Step-by-Step Solution:**

1. **Understanding Emphysema**: Emphysema is a chronic lung condition characterized by the damage and rupture of the air sacs (alveoli) in the lungs. This condition often results from long-term exposure to irritants, with smoking being a major cause.

2. **Identifying the Treatment**: To treat emphysema, it is crucial to identify the specific human protein that can help manage or alleviate the symptoms of this condition.

3. **Recognizing the Protein**: The human protein that is used in the treatment of emphysema is called **Alpha-1 Antitrypsin**. This protein is produced in the liver and plays a significant role in protecting tissues from damage.

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