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16 terms

Dimorphic Systemic Fungi

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Dimorphics
Histo, Blasto, and Cocci,
mold at room temp and yeast at 37
Histoplasma Capsulatum what type of cultures??
Bone marrow, respiratory specimen, blood cultures
Histo Geographical
Ohio and Mississippi
How long does Histo take to grow
10-14 days
Appearance in Tissues
2-4 microns, INTRACELLULAR in macrophages, smaller than Blasto
Type of Media
fungal media with cycloheximide, which enhances
Must be differentiated from?
Sepedonium which is not dimorphic
BLASTOMYCES description
8-15 double walled, no macroconidia
BLASTO culture from
sinuses, drainage
BLAST at 37? at RT?
37 it is rounded (cotton seed) and RT it looks like lollipops
Media
cotton seed agar; converts Blasto
COCCIDIOIDES IMMITIS grows?
in 5 days
Causes?
San Juoquin Valley Fever or Desert Valley Fever
Appearance in tissue
SPHERULE (37)
Colony morphology
barrel-shaped arthroconidia
arthroconidia
hyphae fragments- reproductive cells (sporolates); highly infectious