Pseudohyphae Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Pseudohyphae and links to relevant pages within the course.
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| The colonies growing on the surface of this brain-heart infusion with blood agar plate were "converted" from a mold colony suspected of being Histoplasma capsulatum by incubating a subculture at 37°C for 5 days. The yeast forms that must be identified in mounts made from one of these colonies to confirm the identification are: | View Page |
| Match the names of each of the yeast species listed with its corresponding appearance when grown in cornmeal agar, as seen in the images. | View Page |
| Arrange in sequence the steps that should be taken to make a definitive identification of Cryptococcus neoformans. | View Page |
| Match each of the fungal species listed below with the appropriate category, indicating whether or not it has the capability of producing pseudohyphae on cornmeal agar. | View Page |
| Shown in this photomicrograph is a Gomori methenamine silver stain of a lung biopsy obtained from a patient with X-ray evidence of multi-focal pneumonitis. The yeast most likely to be recovered in culture of this tissue is: | View Page |
| The colony shown in the upper image was recovered from peritoneal fluid of a patient receiving continuous peritoneal dialysis. The lower image is a photomicrograph prepared from a small portion of the colony illustrating the microscopic morphology. Each of the following species of yeast can be eliminated except: | View Page |
| This photomicrograph is a representative field of a Wright-Giemsa-stained bone marrow aspirate in which a pair of budding yeast cells is seen centrally (arrows). Based on the appearance of these yeast cells, what other test would you expect to be positive? | View Page |
| A yeast identification system gave a biotype number for an unknown isolate that did not differentiate between Candida tropicalis and Candida parapsilosis. This isolate could be identified as C. parapsilosis in a cornmeal agar preparation if it produced: | View Page |