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Baek HG. Study on the Prevalence of Lung Disease of Non-Tuberculosis Mycobacterium Isolated from Respiratory Specimens in Gwangju Second Hospital over the Last 10 Years. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2020. [DOI: 10.15324/kjcls.2020.52.4.349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Hae-Gyeong Baek
- Department of Laboratory Medicine, Kwangju Christian Hospital, Gwangju, Korea
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2
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Lee S, Hwang KA, Ahn JH, Nam JH. Evaluation of EZplex MTBC/NTM Real-Time PCR kit: diagnostic accuracy and efficacy in vaccination. Clin Exp Vaccine Res 2018; 7:111-118. [PMID: 30112350 PMCID: PMC6082673 DOI: 10.7774/cevr.2018.7.2.111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 07/28/2018] [Accepted: 07/30/2018] [Indexed: 12/04/2022] Open
Abstract
Purpose Tuberculosis (TB) is mainly caused by Mycobacterium tuberculosis, which is a pathogenic mycobacterial species grouped under Mycobacterium tuberculosis complex (MTBC) with four other pathogenic mycobacterial species. The mycobacteria not included in MTBC are known as nontuberculous mycobacteria (NTM), and cause several pulmonary diseases including pneumonia. Currently, NTM occurrences in TB-suspected respiratory specimens have increased, due to which, precise detection of MTBC and NTM is considered critical for the diagnosis and vaccination of TB. Among the various methods available, real-time PCR is frequently adopted for MTBC/NTM detection due to its rapidness, accuracy, and ease of handling. In this study, we evaluated a new real-time PCR kit for analytical and clinical performance on sputum, bronchial washing, and culture specimens. Materials and Methods For assessing its analytical performance, limit of detection (LOD), reactivity, and repeatability test were performed using DNA samples. To evaluate clinical performance, 612 samples were collected and clinically tested at a tertiary hospital. Results LOD was confirmed as 0.584 copies/µL for MTBC and 47.836 copies/µL for NTM by probit analysis (95% positive). For the reactivity test, all intended strains were detected and, in the repeatability test, stable and steady results were confirmed with coefficient of variation ranging from 0.36 to 1.59. For the clinical test, sensitivity and specificity were 98.6%–100% and 98.8%–100% for MTBC and NTM, respectively. Conclusion The results proved the usefulness of the kit in TB diagnosis. Furthermore, it could be adopted for the assessment of vaccine efficacy.
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Affiliation(s)
- Suengmok Lee
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Korea.,Department of Research and Development, Genetree Research, Seoul, Korea
| | - Kyung-A Hwang
- Department of Research and Development, Genetree Research, Seoul, Korea
| | - Ji-Hoon Ahn
- Department of Research and Development, Genetree Research, Seoul, Korea
| | - Jae-Hwan Nam
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Korea
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3
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Hong KS, Ahn JH, Choi EY, Jin HJ, Shin KC, Chung JH, Lee KH. Microbiologic distribution and clinical features of nontuberculous mycobacteria in the tertiary hospital in Daegu. Yeungnam Univ J Med 2015. [DOI: 10.12701/yujm.2015.32.2.71] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kyung Soo Hong
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - June Hong Ahn
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Eun Young Choi
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Hyun Jung Jin
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Kyeong-Cheol Shin
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Jin Hong Chung
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Kwan Ho Lee
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
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4
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Park JS, Choi JI, Lim JH, Ahn JJ, Jegal Y, Seo KW, Ra SW, Jeon JB, Lee SH, Kim SR, Jeong J. The combination of real-time PCR and HPLC for the identification of non-tuberculous mycobacteria. Ann Lab Med 2013; 33:349-52. [PMID: 24003425 PMCID: PMC3756239 DOI: 10.3343/alm.2013.33.5.349] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 06/11/2013] [Accepted: 07/03/2013] [Indexed: 12/01/2022] Open
Abstract
We used HPLC and AdvanSure real-time PCR (LG Life Sciences, Korea) to retrospectively analyze non-tuberculous mycobacteria (NTM) in 133 clinical specimens. The specimens were culture-positive for NTM and the HPLC method identified 130 strains of mycobacteria from the cultures (97.7%) at the species level. Among the isolates, 48 Mycobacterium. kansasii (36.1%), 39 M. intracellulare (29.3%), 17 M. avium (12.8%), 16 M. abscessus (12.0%), 6 M. fortuitum (4.5%), 2 M. szulgai (1.5%), 2 M. gordonae (1.5%), and 3 unclassified NTM strains (2.3%) were identified. The real-time PCR assay identified 60 NTM-positive specimens (45.1%), 65 negative specimens (48.9%), and 8 M. tuberculosis (TB)-positive specimens (6.0%). The real-time PCR assay is advantageous because of its rapid identification of NTM. However, in our study, the real-time PCR assay showed relatively low sensitivity (45.1%) when using direct specimens including sputum and bronchoalveolar lavage (BAL) fluid. HPLC is useful as it discriminates NTM at the species level, although it is time-consuming and requires specific equipment and technical expertise. A combination of both methods will be helpful for the rapid and accurate identification of mycobacteria in clinical laboratories.
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Affiliation(s)
- Jae Sun Park
- Department of Laboratory Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
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Simultaneous detection of Mycobacterium tuberculosis complex and nontuberculous mycobacteria in respiratory specimens. Tuberculosis (Edinb) 2013; 93:642-6. [PMID: 23988279 DOI: 10.1016/j.tube.2013.07.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 07/25/2013] [Accepted: 07/30/2013] [Indexed: 11/22/2022]
Abstract
Many nontuberculous mycobacteria (NTM) species have clinical significance, and the rapid and reliable identification of Mycobacterium tuberculosis complex (MTBC) and NTM species is important. We evaluated the simultaneous detection of MTBC and NTM in respiratory specimens. MTBC and NTM were simultaneously detected and identified by laboratory-developed (LDT) real-time PCR, multiplex real-time PCR/melting curve analysis, rpoB PCR restriction fragment length polymorphisms and the AdvanSure Mycobacteria GenoBlot assay (LG Life Sciences). Eighty-five respiratory specimens from 69 patients showed simultaneous detection of MTBC and NTM. A line probe assay showed 70.6% concordance with LDT. Ten patients (14.5%) had a history of tuberculosis, and eight patients (11.6%) had been previously diagnosed with bronchiectasis. Mixed cultures were present one time in 57 patients (82.6%) and repeatedly in 12 patients (17.4%). MTBC was more frequent in 44 patients (63.8%), and NTM was isolated in seven patients (10.1%). The commonly detected NTM species in the mixed cultures were Mycobacterium intracellulare (29.0%) and Mycobacterium abscessus (29.0%). Co-isolation caused a failure of antitubercular drug susceptibility testing in 2 patients (2.9%). Molecular methods allow MTBC and NTM species to be simultaneously identified in respiratory specimens. NTM isolated with MTBC has clinical significance in some patients and should not be ignored.
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Lee MK, Seo YH, Jeong JH, Park PW, Kim KH, Ahn JY, Kim JY, Park JW. Nontuberculous Mycobacteria Isolated from Respiratory Specimens during Recent Two Years: Distribution and Clinical Significance. ACTA ACUST UNITED AC 2012. [DOI: 10.5145/kjcm.2012.15.3.98] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Min Kyoung Lee
- School of Medicine, Gachon University School of Medicine, Incheon, Korea
| | - Yiel Hea Seo
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Ji Hoon Jeong
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Pil Whan Park
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Kyung Hee Kim
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Jeong Yeal Ahn
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Jin Yong Kim
- Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Jeong Woong Park
- Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea
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Kwon JE, Son JH, Lee YB, Lim JH, Choi YJ, Han M, Jeon YK, Im SA, Park WB. A Case of Disseminated Skin and Soft Tissue Infection due to Mycobacterium abscessuswith Metastatic Breast Cancer. Infect Chemother 2012. [DOI: 10.3947/ic.2012.44.3.201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Ji Eun Kwon
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jun Hyuk Son
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Yun Bin Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Joo Hyun Lim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Yoon Jin Choi
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Miyeun Han
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Yoon Kyung Jeon
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Seock-Ah Im
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Wan Beom Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
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Song JS, Choe PG, Song KH, Park KU, Park WB, Park SW, Kim NJ, Oh MD, Kim HB. Multiple Opportunistic Infections and Primary Central Nervous System Lymphoma in a Patient with Idiopathic CD4+ T-lymphocytopenia. Infect Chemother 2012. [DOI: 10.3947/ic.2012.44.1.17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jin-Su Song
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Pyeong Gyun Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kyoung-Ho Song
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Kyoung Un Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Wan Beom Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Won Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Nam Joong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Myoung-don Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hong Bin Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
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Jeong J, Kim SR, Lee SH, Lim JH, Choi JI, Park JS, Chang CL, Choi JY, Richman DD, Smith DM. The Use of High Performance Liquid Chromatography to Speciate and Characterize the Epidemiology of Mycobacteria. Lab Med 2011; 42:612-617. [PMID: 24443588 PMCID: PMC3892985 DOI: 10.1309/lmddehpsye6zdm3c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE We evaluated high-performance liquid chromatography (HPLC) for species identification of mycobacteria from various clinical specimens in an urban hospital in South Korea between January 2005 and December 2009. METHODS In the study period 24,774 cultures were completed, yielding the 3215 clinical isolates cultivated for mycobacteria and positive cultures that had mycolic acid investigated by HPLC. For species identification, we compared HPLC patterns of clinical isolates with 33 standard Mycobacterium species. RESULTS There were 3 different HPLC groups with single, double, and triple-cluster patterns representing 9, 20, and 4 mycobacterial species, respectively. Species identification rates of HPLC for Mycobacterium tuberculosis and nontuberculous mycobacteria (NTM) were found to be 100% and 95.6%, respectively. Among mycobacterial isolates, 12.1% were NTM-positive. There were 20 different NTM species with frequencies of 0.3%~15.5%. CONCLUSION The HPLC method was highly sensitive identifying NTM isolated from clinical specimens.
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Affiliation(s)
- Joseph Jeong
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Sung-Ryul Kim
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Seon Ho Lee
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Ji-Hun Lim
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Jung In Choi
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Jae Sun Park
- Department of Laboratory Medicine, Ulsan University Hospital,
University of Ulsan College of Medicine, Ulsan
| | - Chulhun L. Chang
- Department of Laboratory Medicine, Pusan National University School
of Medicine, Busan
| | - Jun Yong Choi
- Department of Internal Medicine, Yonsei University College of
Medicine, Seoul, South Korea
| | - Douglas D. Richman
- Department of Medicine, University of California San Diego, La
Jolla, CA
- Department of Pathology, University of California San Diego, La
Jolla, CA
- Veterans Affairs San Diego Healthcare System, San Diego, CA
| | - Davey M. Smith
- Department of Medicine, University of California San Diego, La
Jolla, CA
- Veterans Affairs San Diego Healthcare System, San Diego, CA
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Jeong J, Kim SR, Chang CL, Lee SH. [Identification of mycobacteria species by HPLC and species distribution during five years at Ulsan university hospital]. Korean J Lab Med 2008; 28:24-33. [PMID: 18309252 DOI: 10.3343/kjlm.2008.28.1.24] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Infections caused by mycobacteria have been significantly increasing. Due to the difficulty of making a decision about the pathogenicity of mycobacteria, species-level identification is very important for patients' diagnosis and treatment. The purpose of this study was to identify mycobacteria species using a high performance liquid chromatography (HPLC) method and to provide an initial database for the distribution of mycobacteria in Korea. METHODS Acid fast bacteria isolated from 3,107 clinical specimens were identified by mycolic acid analysis using HPLC. The HPLC patterns were compared with those of standard mycobacteria species. RESULTS The HPLC patterns were divided into single, double, and triple cluster groups, each group comprising 9, 20, and 4 species, respectively. Mycobacteria and non-tuberculous mycobacteria (NTM) were identifies by HPLC at the rates of 99.5% and 95.6%, respectively. NTM was isolated in 12.4% of the mycobacteria positive specimens. This study also found that there were 20 different NTM species with the distribution of each species ranging from 0.3% to 15.9% of the total NTM. While the rate of NTM has been increasing in Korea, M. avium-intracellulare, M. fortuitum, and M. chelonae are relatively decreasing, and M. kansasii and M. gordonae are relatively increasing. CONCLUSIONS HPLC method was highly discriminative for the identification of NTM in clinical specimens.
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Affiliation(s)
- Joseph Jeong
- Department of Laboratory Medicine, Ulsan University College of Medicine, Ulsan, Korea.
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11
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Chang HE, Heo SR, Yoo KC, Song SH, Kim SH, Kim HB, Park KU, Song J, Lee JH, Park SS, Kim EC. [Detection of mycobacterium tuberculosis complex using real-time polymerase chain reaction]. Korean J Lab Med 2008; 28:103-8. [PMID: 18458505 DOI: 10.3343/kjlm.2008.28.2.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND For the detection of Mycobacterium tuberculosis complex (MTB), PCR is known to be sensitive, specific, and rapid compared to the conventional methods of acid-fast-bacilli (AFB) smear and culture. We evaluated a new approach for MTB detection using real-time PCR. METHODS The specificity of real-time PCR was evaluated using 20 MTB isolates and 37 nontuberculous mycobacteria (NTM) isolates identified by AccuProbe Mycobacterium tuberculosis complex colony identification test (Gen-Probe Inc., USA) and Myco-ID (M&D, Korea). One hundred sputum specimens (50 AFB smear-positive and 50 negative specimens) were analyzed using real-time PCR and Amplicor Mycobacterium tuberculosis test (Roche, Germany). The results of real-time PCR positives (55 samples) and negatives (598 samples) were analyzed by AFB smear and culture. RESULTS The real-time PCR assay accurately discriminated between MTB and NTM species. Realtime PCR and Amplicor test yielded the same results in 96.0% (96/100) of the sputum specimens tested. The sensitivity and specificity of real-time PCR based on AFB culture were 97.4% and 88.5%, respectively. Of the 55 real-time PCR positive specimens, 83.6% (46/55) were culture-positive, 30.9% (17/55) were smear-positive, 52.7% (29/55) were smear-negative and culture-positive, and 14.5% (8/55) were both smear and culture-negative. Among the 598 real-time PCR negative specimens, 60 were not tested for AFB smear or culture and 10 were contaminated. Of the remaining 528 specimens, 478 (90.5%) were both smear and culture-negative and 39 (7.4%) were culture-positive. CONCLUSIONS For the detection of MTB, real-time PCR was sensitive and specific and comparable to conventional methods. It can be used for rapid identification of M. tuberculosis in clinical laboratories.
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Affiliation(s)
- Ho Eun Chang
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
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12
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Kim CJ, Kim NH, Kim M, Kim KH, Jeon JH, Park MS, Park KU, Park WB, Park SW, Kim HB, Kim NJ, Oh MD, Choe KW. A Case of Diabetic Foot Infection due to Mycobacterium mageritense. Infect Chemother 2008. [DOI: 10.3947/ic.2008.40.6.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Chung-Jong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Nak-Hyun Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Moonsuk Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kye-Hyung Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Hyun Jeon
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Moon Seok Park
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyoung Un Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Wan Beom Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sang-Won Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hong Bin Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Nam Joong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Myoung-don Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kang Won Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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Kang SH, Yoo KC, Park KU, Song J, Kim EC. Usefulness of Multiplex Real-Time PCR and Melting Curve Analysis in Identification of Nontuberculous Mycobacteria. Ann Lab Med 2007; 27:40-5. [DOI: 10.3343/kjlm.2007.27.1.40] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Seong-Ho Kang
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang Cheol Yoo
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Kyoung Un Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Junghan Song
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Eui Chong Kim
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
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