DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Fungal nail infection. Toenails of a 68-year-old man with onychomycosis, or tinea unguium, a fungal infection of the nails. This condition can be caused by various fungi, including Microsporum and Trichophyton. Treatment is with anti-fungal drugs.
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