Examples of vaccines include

Options

A. BCG
B. tetracycline
C. penicillin
D. DPT

Answer

To answer the question "Examples of vaccines include," we need to identify which of the given options are vaccines. The options provided are BCG, tetracycline, penicillin, and DPT. Let's analyze each option step by step.

### Step-by-Step Solution

1. **Identify BCG**:
- BCG stands for Bacillus Calmette-Guérin.
- It is a vaccine used to protect against tuberculosis (TB).
- Tuberculosis is caused by the bacterium Mycobacterium tuberculosis.
- Since BCG is a vaccine, it is an example of a vaccine.

2. **Identify Tetracycline**:
- Tetracycline is an antibiotic, not a vaccine.
- It is used to treat bacterial infections by killing bacteria.
- Therefore, tetracycline is **not** an example of a vaccine.

3. **Identify Penicillin**:
- Penicillin is also an antibiotic, derived from the Penicillium fungus.
- It is used to treat various bacterial infections.
- Since penicillin is an antibiotic and not a vaccine, it is **not** an example of a vaccine.

4. **Identify DPT**:
- DPT stands for Diphtheria, Pertussis (whooping cough), and Tetanus.
- It is a combination vaccine that protects against these three diseases.
- Since DPT is a vaccine, it is an example of a vaccine.

### Conclusion
The examples of vaccines from the given options are:
- **BCG**
- **DPT**

### Final Answer
Examples of vaccines include BCG and DPT.

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