In tissue, Coccidioides immitis produces
Coccidioides immitis is a dimorphic fungus. Yeast form is a spherule filled with endospores. Mycelial phase contains pseudohyphae, which fragments into ahrospores. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition
Spherules and endospores
Encapsulated yeast cells
Fine, delicate hyphae
Coarse, septate hyphae
mycology