Identification features of Aspergillus flavus: macromorphology of colonies on culture medium and microscopic structure of conidial heads.
A common species of Aspergillus in culture. (A) A. flavus demonstrates a characteristic yellow-green granular colony. (B) A. flavus forms uniseriate (arrow) and biseriate (dashed arrow) heads and rough conidiophores (double arrow).
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Microscopic diagnosis of tinea capitis (Microsporum) in 20% KOH solution: morphology of spores around hair in dermatophytosis.
Microscopic diagnosis of endothrix trichophytosis: spore location inside the hair, 20% KOH preparations, and causative agents like Trichophyton.
Laboratory detection of Candida fungi: microscopy of scrapes with 20% KOH. Blastospores, pseudomycelium of the fungus in onychomycosis and candidal paronychia.
