Aspergillus - Sciensano · Spores of Aspergillus fumigatusand Aspergillus niger The axesual spores...
Transcript of Aspergillus - Sciensano · Spores of Aspergillus fumigatusand Aspergillus niger The axesual spores...
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Aspergillusflavus, fumigatus, niger
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Aspergillus flavus Small head and spores of A. flavus on Sabouraud agar
(Unstained).
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Aspergillus fumigatus Mycelium with fingerlike branches in fresh sputum
smear (Cotton blue stain).
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Aspergillus fumigatus Gram-positive staining branching mycelium from A.
fumigatus in pus (Gram stain).
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Aspergillus fumigatus In culture. The head has a single row of sterigmata.
There is a gradual transition between the vesicle and the conidiophore (Unstained).
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Aspergillus fumigatus Several heads with a single row of sterigmata in
culture. There is a gradual transition between the vesicle and the conidiophore (Unstained).
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Aspergillus fumigatus Velvety dark greenish colonies in culture on blood
agar.
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Aspergillus niger Large mycelium threads from A. niger in exudate of
external otitis (Gram stain).
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Aspergillus niger The heads of A. niger in culture are round. There is no
transition between the vesicle and the conidiophore (Cotton blue stain).
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Aspergillus niger The heads of A. niger in culture are round (Unstained).
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Spores of Aspergillus fumigatusand Aspergillus niger
The axesual spores of A. fumigatus measure approximatively 2μ and are smooth, those of A. niger
5μ, and are brown-black with often a spiny surface (Cotton blue stain, Unstained).