Paper I — 2023 January (Supplementary) (2019 Scheme) — Q16

Paper I

2023 January (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

What are dimorphic fungi.

Q161 marks★✓

Answer

Dimorphic fungi are fungi capable of existing in two distinct morphological forms depending on temperature — a filamentous mould at ambient temperature (25°C) and a yeast (or spherule, in the case of Coccidioides) form at body temperature (37°C) in host tissue. Examples: Histoplasma capsulatum, Sporothrix schenckii, Blastomyces dermatitidis, Coccidioides immitis.

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