Manor Preboards Module 6 Practice Test 2026 - Free Preboards Practice Questions and Study Guide

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Which genus is not a common dermatophyte causing infections of keratinized tissues?

Epidermophyton

Trichophyton

Microsporum

Trichosporum

Infections of keratinized tissues are classically caused by dermatophytes that invade and digest keratin. The three main genera responsible for these tinea infections are Epidermophyton, Trichophyton, and Microsporum. The genus in question is not part of that dermatophyte trio; it is a yeast-like organism (Trichosporon) and does not belong to the dermatophyte group. Trichosporon is associated with other infections, such as white piedra or opportunistic fungemia, rather than the common dermatophytic keratinized-tissue infections. So it’s not a typical dermatophyte causing those infections.