A gardener develops a brown patch of skin in the center of the palms of his hands.  He has treated them with a variety of over the counter medicine but it does not go away.  When the itching becomes worse he seeks medical advice.  He is diagnosed with tinea nigra.  What is the causative agent of this infection?

Several children at a summer camp have lesions on their feet along with infected toenails.  The organism has an olive/brown surface with a yellow periphery and a pale yellow reverse. Microscopically, smooth 2-4 celled club-shaped macroconidia and no microconidia are observed. This organism is most likely:

A direct India Ink prep of CSF reveals a yeast organism that does not have a capsule.  Which of the following is the correct course of action?

Which of the following organisms must always be worked with under a biological safety hood?

Which of the following stains greatly enhance the visibility of fungi by binding to the cell walls, causing the fungi to fluoresce?

The U.S. president can

A culture from a chronic interdigital lesion of the foot grew a mold that is yellow to buff on the surface with a red-brown reverse, rare pencil-shaped macroconidia, and numerous microconidia in grapelike clusters with some spiraling hyphae also observed.  The organism is also positive for both urease and in-vitro hair perforation.  This organism is most likely:

Which stage of Coccidioides immitis is found in tissue?

A rapid growing (2-5 days) culture of fluffy blue-green colonies from a respiratory specimen obtained from an immunocompromised ICU patient showed septate hyaline hyphae with many conidiophores. The tips of the conidiophores expand into large dome-shaped vesicles with bottle-shaped phialides covering the upper half or two-thirds of its surface. Long chains of conidia are present at the ends of the phialides. At the base of the conidiophore, a “foot cell” is seen attaching the conidiophore to the septate hyphae. The most likely organism is?

Which of the following procedures should be performed to confirm that an unknown mold is one of the pathogenic dimorphic fungi: