What happens in secondary lymphoid organs with respect to immunity?

Explanation

### Step-by-Step Text Solution

1. **Understanding Immunity**:
- Immunity refers to the capability of multicellular organisms to resist harmful pathogens or microorganisms. It is the body’s defense mechanism against infections.

2. **Types of Lymphoid Organs**:
- Lymphoid organs are classified into two types: primary lymphoid organs and secondary lymphoid organs.
- **Primary Lymphoid Organs**: These include the bone marrow and thymus, where immune system cells (lymphocytes) are formed.
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