The serum collected from rabbit containing antibodies formed against human serum is called

Options

A. Human antibodies serum
B. Human serum
C. Anti rabbit serum
D. Anti human serum

Answer

To answer the question, "The serum collected from rabbit containing antibodies formed against human serum is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**: The question refers to a serum collected from a rabbit. This serum contains antibodies that the rabbit has produced in response to exposure to human serum.

2. **Identify the Components**:
- The serum is from a rabbit.
- The antibodies in this serum are specifically formed against human serum.

3. **Define the Terminology**:
- **Antibodies**: Proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
- **Anti-human serum**: This term refers to serum that contains antibodies specifically targeting human antigens.

4. **Analyze the Options**:
- **Human antibody serum**: This would imply antibodies formed in humans, not rabbits.
- **Human serum**: This refers to serum from humans, not relevant here.
- **Anti-rabbit serum**: This would imply antibodies against rabbit antigens, which is not the case.
- **Anti-human serum**: This correctly describes the antibodies formed in the rabbit serum against human serum.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **anti-human serum**.

### Final Answer:
The serum collected from rabbit containing antibodies formed against human serum is called **anti-human serum**.

---