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  • Title: [Scanning electron microscope sudy of the morphology of fungi isolated from patients at the Aristide La Dantec Hospital in Dakar, Senegal].
    Author: Ndiaye M, Ndir O, Diarra K, Gaye O, Toguebaye BS, Diallo S.
    Journal: Dakar Med; 1996; 41(1):1-6. PubMed ID: 9827085.
    Abstract:
    In order to improve the identification of fungi usually isolated among some patients at Dantec Hospital, a study by scanning electron microscopy has been carried out. It deals with four species of yeasts (Candida albicans, Candida parapsilosis, Rhodotorula rubra Sacharomyces cerevisiae) six species of dermatophytes (Trichophyton rubrum, Trichophyton soudanense, Trichophyton interdigitale, Microsporum canis, Trichophyton violaceum, Microsporum audouinii); two species of mildew, (Aspergullus flavus, Aspergillus niger) and one species of dimorphic fungi (Histoplasma duboisii). The yeasts get a smooth surface with, often, a mark of but on it. Microsporum canis presents some echinulate macroconidia. Trichophyton violaceum is characterized by the appearance of echinulate chlamydoconidium with a twofold bulge and Microsporum audouinii by a echinulate chlamydoconidium with a bulge only. Trichophyton rubrum presents macroconidia with smooth surface and in "sausage" form, as for Trichophyton soudanense it presents some arthroconidia that are cells which get more or less rectangular form and with smooth surface. Aspergillus flavus is characterized by the presence of a conidiophore with a verrucosis surface and an aspergillary head of about 36 microns having some spores with almost smooth inner surface. On the other hand, Aspergillus niger gets a conidiophore with smooth surface. As for Histoplasma duboisii, the surface of the chlamydoconidium presents some verrucosis that are real conidia in formation. The scanning electron microscopy enables use to discover the existence of characters that are likely to be used for the identification of fungi.
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