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KMID : 1101420240560010059
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Korean Journal of Clinical Laboratory Science
2024 Volume.56 No. 1 p.59 ~ p.65
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Distribution of Aerobic Intestinal Microorganisms in the Feces of the Striped Field Mouse (Apodemus agrarius coreae) in Jeju
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Kim Ji-Ro
Oh Yun-Hee
Chong Moo-Sang
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Abstract
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This study examined the fecal samples of striped field mice (Apodemus agrarius coreae) captured in Jeju Special Self-Governing Province. Fecal samples, including the colon and other intestinal organs, were collected and subjected to aerobic culture to investigate the distribution of intestinal microorganisms. Gram staining of the aerobic cultured bacterial colonies from 36 fecal samples revealed the predominant presence of gram-negative bacilli in all samples. Among the 36 samples, gram-negative bacilli were identified in 36 strains (100%), gram-positive cocci in 21 strains (58.3%), and gram-positive bacilli in 15 strains (41.7%), while no gram-negative cocci were observed. The gram-negative bacilli cultured from the 36 samples were identified using the Vitek 2 system, and all were determined to be Escherichia coli (E. coli) strains. In addition, one sample was concurrently identified with E. coli and Enterobacter cloacae strains. The antimicrobial susceptibility testing for the identified E. coli strains did not include all antibiotics, but one strain exhibited intermediate resistance to cefoxitin. No pathogenic bacteria were present in the fecal samples of the scrub typhus-infected rodents, which are vectors for chigger-borne diseases affecting humans and animals.
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KEYWORD
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Colon, Communicable diseases, Escherichia coli, Mice, Murinae
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