A disease which can be transferred from mother to child through placenta is

Options

A. German measles
B. Syphilis
C. AIDS
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a disease that can be transferred from mother to child through the placenta. This requires knowledge of diseases that are known to cross the placental barrier.

2. **Defining the Placenta**: The placenta is a temporary organ that connects the developing fetus to the uterine wall, allowing for nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. Understanding its role is crucial in identifying diseases that can be transmitted through it.

3. **Analyzing the Options**:
- **Option 1: German Measles**: This disease is caused by the rubella virus, which can indeed be transmitted from the mother to the fetus through the placenta during pregnancy.
- **Option 2: Syphilis**: Caused by the bacterium Treponema pallidum, syphilis can also be transmitted from an infected mother to her child through the placenta.
- **Option 3: AIDS**: AIDS is caused by the Human Immunodeficiency Virus (HIV), which can be transmitted from the mother to the child during pregnancy or childbirth through the placenta.
- **Option 4: All of the Above**: Since all three diseases mentioned (German measles, syphilis, and AIDS) can be transmitted from mother to child through the placenta, this option suggests that all are correct.

4. **Conclusion**: Since all three diseases can be transmitted through the placenta, the correct answer to the question is **"all of this."**

**Final Answer**: All of the above (German measles, syphilis, and AIDS) can be transferred from mother to child through the placenta.

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