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<i>Micrococcus antarcticus</i> - psychrophilic (cold tolerant) bacterium
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Image #   211271A
Name:   Allergenic fungus (Alternaria alternata)
Copyright:   Copyright 2011 Dennis Kunkel Microscopy, Inc.
Description:   Description: Sporulating, filamentous / hyphae fungus (Alternaria alternata). Filamentous hyphae are seen here producing conidiophores with condia / spores at their tips. Alternaria is a dematiaceous (phaeoid; black pigmented mold) fungus commonly isolated from plants, soil, food, and indoor building environments. These molds are characterized by their dark pigmentation due to melanin, which effectively absorbs harmful UV-radiation and protects the organisms from fatal damage caused by radiation. They are causative agents of phaeohyphomycosis and other respiratory allergies. A. alternata is an allergenic fungus that is one of the main fungal causes of allergy, being a common type I & III allergen. Alternaria alternata is a cause of both allergic rhinitis (hay fever) in which inflammation of the mucous membrane of the nose occurs and of allergic asthma. It is the most common species isolated from human infections. Cases of onychomycosis, sinusitis, ulcerated cutaneous infections, and keratitis, as well as visceral infections and osteomyelitis have been reported. Alternaria is commonly found in house dust, carpets, textiles, on horizontal surfaces in building interiors, and window frames. Alternaria alternata also causes leaf spots, rots and blights in plants.
Type: SEM
Magnification:* x400
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   06.01.11 211271A Alternaria alternata Alternaria soil fungi soil fungus onychomycosis sinusitis type I allergen type III allergen allergen allergenic asthma fungi and slime molds fungus fungus disease fungus infection fungus pathogen human disease human infection hypha hyphae mycelia mycelium mycoses mycosis mycotic keratitis osteomyelitis phaeohyphomycosis phaeoid fungus pneumonitis respiratory infection rhinitis skin infection SEM fungal spore fungal spores fungi spore fungi spores fungus spore fungus spores spore spores allergenic fungus respiratory allergies respiratory allergy allergic rhinitis hay fever allergic asthma keratitis opportunistic pathogen opportunistic pathogens black pigmented mold black pigmented molds black-pigmented mold black-pigmented molds dematiaceae dematiaceous dematiaceous fungi dematiaceous fungus melanin blights fungus blight fungus blights fungus leaf spot fungus leaf spots fungus rot fungus rots leaf spot leaf spots plant blight plant blights plant rot plant rots Ascomycota Dothideomycetes Pleosporales Pleosporaceae decaying plant decaying plants saprobe saprobes saprophyte saprophytes saprophytic conidia conidiophore conidiophores conidium eukaryote

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