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mibo test one - Test One Study Guide Arthrospore o Type of...

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Test One Study Guide Arthrospore o Type of asexual spore o Form via fragmentation of septate hyphae into single cells o Ex. Coccidioides Arthrospores (Coccidioides) o Notorious form of Coccidiodes can be inhaled o Coccidioides = protozoa-like fungi o Arthrospores are found in sand/dust in the desert in the San Joaquin Valley in California, and develop flu-like symptoms. o Develop immunity if lived in that area for a long time, but if an outsider comes in and kicks dust and inhales arthrospores then sickness develops Ascospore o Sexual spore o Contained in a sac-like “ascus” larger sac (cleistothecium) Ascomycete o Class of fungi o Form spores o Inside special sac-like structures called asci (sing. ascus) Ascomycota o Medically important phyla of fungi o “sac fungi” o septate hyphae o asexual spores: conidiospores o sexual spores: ascospores in sac-like ascus o Ex: Eupenicillium Aspergillus o Septate hyphae o Form conidiospores (asexual reproduction) o Form ascospores (sexual reproduction) o Nosocomial exposure: airducts in hospital have Aspergillus, and is spread via air circulation caught in healthcare settings o Can grow in cavaties in the body without invading Ex. TB pts with granulomas where asp is inhaled, then can grow in that cavity o Narrower in hyphal diameter than zygomycetes Basidiomycetes o Class of fungi o Mushrooms o Spore formers o Now include Cryptococcus Basidiomycota o “club fungi” includes mushrooms o septate hyphae o asexual spores: conidiospores o sexual spores: basidiospores
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form on base pedestal: basidium spores are generally found under the edges of the top of a mushroom (DRAW PICTURE ) Batrachochytrium dendrobatidis o Getting on frogs, gas exchange on skin o Chytrid o Fungal class, not typically human Blastospore o Type of asexual spore o Budding off parent cell o Ex: Cryptococcus Opportunist; pathogenic yeast most common cause of non- bacterial meningitis in AIDS pts o Ex: Candida albicans Candida o Vaginitis in young women; considered normal flora but when grils take antibiotics, they could get it from suppressed bacteria in vagina and yeasts overtake o Polymorphic; can stay connected but can form “true hyphae (aka mycelium)” or yeasts or pseudohyphae o Nutritional polymorph? o “Opportunistic” because they feed on immunosuppressed patients o Candida albicans With serum at 37 C germ tube (filamentous) former If limited to yeast phase: avirulent Form chlamydospores and blastospores Nutritional polymorph yeast, pseudohyphae, true hyphae(prob invasive) True hyphae = probably invasive…esp is on tongue o If scraped and bleed = vertical growth! Bad! If scrape and does not bleed then probably only colonizing o Pichia = a non albicans form of Candida Chlamydospore o Type of asexual spore o Form via rounding and enlargement within a hyphal segment o Ex. Candida albicans “Clamp connection” o
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