Give the full name of HIV. What is AIDS?

Explanation

### Step-by-Step Text Solution:

1. **Full Name of HIV**:
- The full name of HIV is **Human Immunodeficiency Virus**.

2. **Definition of AIDS**:
- AIDS stands for **Acquired Immunodeficiency Syndrome**.
- It is a disease characterized by a severe reduction in the number of T lymphocytes, specifically the helper T cells, which play a crucial role in the immune system.
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