What do you mean by passive immunity?

Explanation

### Step-by-Step Text Solution for the Question: What do you mean by passive immunity?

1. **Definition of Acquired Immunity**:
- Acquired immunity refers to the immunity that is not naturally present in the body but is developed over a person's lifetime. It involves the activation of lymphocytes, which are a type of white blood cell.

2. **Types of Acquired Immunity**:
- Acquired immunity can be divided into two main types: active immunity and passive immunity.
- **Active Immunity**: This occurs when the body actively produces its own antibodies in response to an antigen (a foreign substance that induces an immune response).
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