Which lymphocytes form the cell-mediated immune system?

Explanation

### Step-by-Step Solution

1. **Understanding the Immune System**: The immune system is broadly categorized into two types: innate immunity and acquired immunity. Innate immunity is the natural defense mechanism present from birth, while acquired immunity develops over time as the body encounters pathogens.

2. **Identifying Lymphocytes**: Lymphocytes are a type of white blood cell crucial for the immune response. They are primarily divided into two main types: T-lymphocytes (T-cells) and B-lymphocytes (B-cells).

3. **Focusing on T-Lymphocytes**: The cell-mediated immune system is primarily associated with T-lymphocytes. T-cells play a direct role in fighting infections and are essential for the cell-mediated immune response.

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