Medical Mycology
Medical Mycology
Medical Mycology
Class Structure Filamentous (molds) -Long branching filaments (hyphae) intertwine a mass of filaments (mycelium) -Some penetrate deeply into medium (vegetative) while some grow above the surface (aerial) -Asexual spores -Strongly adherent to medium and cannot be emulsified in water (does not resemble bacteria colonies) -The surface may be powdery, velvety, or cottony aerial mycelium -Present of pigmentation and underlying medium -Very susceptible to slight difference in cultural conditions as type and temperature of medium Yeast -Oval body Yeast-like -Long unbranching filaments + budding yeast-like cells (broad septate hyphae) intertwine pseudomycelium -Grouped together in genus Candida Dimorphic Fungi -Filamentous (saprophytic phase) -Oval body (parasites)
Characteristics
-Reproduces by budding (blastospores) -Resembles bacterial colonies in consistency -The only pathogenic yeast is Cryptococcus neoformans
-Eg: Histoplasmosis