This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Coccidioides immitis is identified in tissues on the basis of which of the following- 
Select and explain. 
A. Budding yeast cells with pseudohyphae, B. Yeaslike forms with very large capsules, C. Ahrospores, D. None
C: Ahrospores
Answer: C: Ahrospores 
Explanation: Ans. is 'c' i.e., Ahrospores . C. immitis is identified by its appearance (endosporulating spherules) and by the formation of thick walled, barrel-shaped spores, called ahrospores. Remember . Blastomyces dermatitidis --> Yeast phase has spherical or oval double walled cells with single broad based bud. Paracoccidioides brasiliensis --> Yeast phase has spherical thick walled cells with multiple buds. Coccidioides immitis --> Tissue phase has spherule with numerous endospores.