fungi.pptm [lecture seule]...microsoft powerpoint - fungi.pptm [lecture seule] author dcarlier...
TRANSCRIPT
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Fungiopportunistic, and pathogenic
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Acremonium (Cephalosporium) sp. Delicate, septate hyphae. Conidia are oblong and usually one celled but occasionally two celled (Cotton
blue stain).
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Acremonium (Cephalosporium) sp. Delicate, septate hyphae. Conidia are oblong and
usually one celled (Unstained).
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Acremonium sp. Conidia (spores) of Acremonium sp. are oblong,
slightly variable in size, and usually one celled (Cotton blue stain).
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Alternaria sp. Commonly considered a contaminant, producing large
dark conidia with septations.
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Arthrinium sp. Dark brown lenticular conidia (Unstained).
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Aureobasidium pullulans Dark brown conidia and hyaline hyphae (Unstained).
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Blastomyces dermatitidis Budding yeast with broadly inserted base in pus from
spondylitis (Unstained).
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Chaetomium sp. Perithecia with filamentous appendages in culture
(Unstained).
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Coccidioides immitis A round spherule containing endospores in a lung
biopsy (Grocott's silver stain).
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Coccidioides immitis Arthroconidia in a culture (Unstained).
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Exophiala dermatitidis Abundant yeast cells and mycelium (Unstained).
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Exophiala dermatitidis Colonies with brown pigment on Sabouraud agar.
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Fusarium solani Large sickle-shaped, multiseptate macroconidia
(Cotton blue stain).
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Fusarium species Large sickle-shaped, multiseptate macroconidia
(Unstained).
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Fusarium species Mycelium with large sickle-shaped macroconidia
(Gram stain).
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Hormographiella aspergillata Mycelium and arthroconidia from a culture on
Sabouraud’s agar (Unstained).
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Hormographiella aspergillata Septated hyphae in lung tissue taken at autopsy
(Haemotoxylin and eosin stain).
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Mucor sp. Wide, practically non-septate hyphae bearing terminal
round spore-filled sporangia. Here most spores have escaped (Cotton blue stain).
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Penicillium marneffei The conidiophores, with their attached chains of
round conidia, have a brush-like appearance (Unstained).
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Penicillium marneffei Culture on Sabouraud-agar showing diffusing red
pigment.
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Penicillium sp. The conidiophores, with their attached chains of
round conidia, have a brush-like appearance (Cotton blue stain).
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Pneumocystis jirovecii In bronchial aspirate. The wall of the parasite stains
dark (Silver stain).
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Pneumocystis jirovecii In bronchial aspirate. The wall of the parasite does not
stain. It contains eight nuclei (Giemsa stain).
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Pneumocystis jirovecii In bronchial aspirate. The cyst walls are clearly visible.
No budding (Direct immunofluorescence).
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Pseudoallescheria boydii Septate hyphae bearing unicellular, oval conidia with
the larger end toward the apex (Unstained).
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Pseudoallescheria boydii (Anamorph: Scedosporium apiospermum). Oval terminal conidia with the larger end toward the apex
(Unstained).
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Scedosporium prolificans Inflated conidiogenous cells with dark, oval, and
terminal conidia (Unstained).
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Scedosporium prolificans Colonies with aerial olivaceous mycelium on
Sabouraud agar.
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Scopulariopsis sp. The conidia are 4 to 9 μm in diameter, often thick
walled, round, usually very rough and spiny when mature (Unstained).
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Scopulariopsis sp. Septate hyphae. The conidia are 4 to 9 μm in diameter,
round, and spiny when mature (Unstained).
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Scopulariopsis brevicaulis The conidia in chains are 4 to 9 μm in diameter, round,
and spiny when mature (Unstained).
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Sporothrix schenckii Thin, septate, and branching hyphae. Small pear-
shaped or almost round conidia (Cotton blue stain).
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Sporothrix schenckii Thin, septate, and branching hyphae. Small pear-
shaped or almost round conidia (Cotton blue stain).
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Stachybotrys sp. Thin and septate hyphae. Dark oval single celled
conidia (Cotton blue stain).