This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Morula in RBC is seen in 
Select and explain. 
A. Babesia, B. Ehrlichia, C. Spirochete, D. Entamoeba
B: Ehrlichia
Answer: B: Ehrlichia 
Explanation: Ehrlichia are small gram negative bacteria,obligate intracellular bacteria which have affinity towards bloodcells,In cytoplasm of infected phagocytic cells,they grow within phagosomes as mulberry like clusters called morula(meaning mulberry).they are tick borne. Ref: ananthnarayan an paniker's microbiology 10th edition