Il Young Hwang

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Nonpathogenic mutants of Xanthomonas campestris pv. glycines 8ra were generated with N-methyl-N-nitro-N'-nitrosoguanidine to identify and characterize pathogenicity genes of the bacterium. A total of 16 nonpathogenic mutants were isolated from 2,000 colonies. One mutant, NP1, was chosen for further study. NP1 did not multiply in soybean cotyledons. A(More)
Fifty-four quinupristin/dalfopristin-resistant Enterococcus faecium (QDREF) isolated from chickens and pigs during 2002-2003 in Korea were screened by PCR for the presence of streptogramin resistance genes vatD, vatE, and vgbA, and macrolide resistance gene ermB. None of the QDREF isolates carried vgbA and vatD genes, while vatE and ermB were detected in(More)
Thyroid cancers are a leading cause of death due to endocrine malignancies. RET/PTC (rearranged in transformation/papillary thyroid carcinomas) gene rearrangements are the most frequent genetic alterations identified in papillary thyroid carcinoma. Although the oncogenic potential of RET/PTC is related to intrinsic tyrosine kinase activity, the substrates(More)
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