A boy has been diagnosed with ADA-deficiency. Suggest any one possible treatment.

Explanation

### Step-by-Step Solution:

1. **Understand ADA Deficiency**:
- ADA stands for adenosine deaminase, an enzyme crucial for the proper functioning of the immune system. Its deficiency leads to severe immune dysfunction, making the individual susceptible to infections.

2. **Identify Treatment Options**:
- The common treatments for ADA deficiency include:
- **Bone Marrow Transplantation**: This involves replacing the defective bone marrow with healthy marrow from a donor.
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