Maurer's dots occur in human RBCs infected by

Options

A. Plasmodium falciparum
B. Plasmodium ovale
C. Plasmodium vivax
D. Plasmodium malariae

Answer

To solve the question regarding Maurer's dots in human RBCs, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**:
- Maurer's dots are specific structures that appear in red blood cells (RBCs) when infected by certain parasites.

2. **Identify the Parasites**:
- The question provides four options of Plasmodium species:
- Option 1: Plasmodium falciparum
- Option 2: Plasmodium ovale
- Option 3: Plasmodium vivax
- Option 4: Plasmodium malaria

3. **Research Maurer's Dots**:
- Maurer's dots are known to be associated with the infection of RBCs by Plasmodium falciparum, which is responsible for the most severe form of malaria.

4. **Analyze the Options**:
- Plasmodium falciparum is the only species among the options that is known to cause the presence of Maurer's dots in infected RBCs.

5. **Confirm with Staining Method**:
- When Giemsa staining is performed on blood smears from patients infected with Plasmodium falciparum, the Maurer's dots appear as dark blue or black granules, confirming their presence.

6. **Conclusion**:
- Based on the information gathered, the correct answer to the question is **Option 1: Plasmodium falciparum**.

### Final Answer:
Maurer's dots occur in human RBCs infected by **Plasmodium falciparum**.