الفهرس 
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Abstract
In this study, samples were collected from human, animal, and chickens to isolate Aspergillus spp.. Human samples include 20 samples of sputum from cases showing chronic pulmonary diseases with no response to antibiotic treatment and 42 samples of nail scrapings from patients show onychomycosis. The samples from cattle include 10 rectal swabs from diarrheic calves and 10 milk samples from mastitic cases showed no response to antibiotic therapy. Ten rectal swabs were collected from diarrheic horses. Lung specimens were collected from 15 cases showed respiratory disorders and 10 samples were collected from suddenly died chicks. Twenty five samples of air from different environments and 10 soil samples were collected from the superficial layer of soil of animal farms and chicken farms. All collected samples were cultured on SDA with chloramphenicol for isolation of Aspergillus species.
from human samples, 17 Aspergillus isolates were obtained in a percentage 27.4%. from animal samples, 16 Aspergillus isolates were obtained in a percentage 29.1%. from environmental samples, 20 Aspergillus isolates were obtained from air samples with a percentage of 80% and 9 Aspergillus isolates were obtained from soil samples with a percentage of 90%.
The total isolated Aspergillus isolates were 63 with a percentage of 41.45%
Aspergillus species were found in the rectal swabs and milk samples of cattle with a percentage of 70% and 35% respectively. While the Aspergillus species was reported in the rectal swabs of horse with a percentage of 20%. from young chick lung samples, Aspergillus species were found in a percentage of 20%.
Differentiation between different species of