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Aspergillus spp.are the second most isolated fungus after Candida spp.Aspergillus fumigatus is the species most commonly isolated; other pathogenic species include A.flavus,A terreus,and A.niger.Aspergillus may be either uniseriate or biseriate.Uniseriate species are those whose phialides attach directly to the vesicle at the end of the conidiophore.Biseriate species possess a supporting structure called a metula.Metulae are attached directly to the vesicle,and then attached to each metula is a phialide.Chains of conidia can be aligned in very straight,parallel columns or in a radiating pattern around the vesicle,and the conidia can be rough or smooth.CDC PHIL #300

Identify the Following