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Identification of Hepatitis E Virus in Bovine and Porcine Raw Livers
( Hyeon-jeong Go ),( Byung-joo Park ),( Hee-seop Ahn ),( Eu-lim Lyoo ),( Dong-hwi Kim ),( Joong-bok Lee ),( Seung-yong Park ),( Chang-seon Song ),( Sang-won Lee ),( In-soo Choi ) 한국미생물 · 생명공학회 2019 Journal of microbiology and biotechnology Vol.29 No.12
Several animal species including pigs are directly involved in the zoonotic transmission of the hepatitis E virus (HEV) to humans. This study was conducted to detect HEV in bovine and porcine raw livers by nested reverse transcription-polymerase chain reaction. Zoonotic HEV strains were identified in 1.0 and 3.0% of the tested bovine and porcine livers, respectively. HEV-4 was detected in the bovine livers, but both HEV-3 and HEV-4 were identified in the porcine livers. These results indicate that zoonotic transmission of HEV may occur via consumption of raw or undercooked livers of pigs and cattle.
Hyeon Ju Nam,Miran Kim,Seok Won Jang,Bok Yeon Jo,Eunyoung Moon,Seung Won Nam 한국환경생물학회 2021 환경생물 : 환경생물학회지 Vol.39 No.4
The genus Chroomonas is a group of blue-green colored cryptomonads. This study describes two freshwater Chroomonas species for the first time in South Korea: Chroomonas nordstedtii Hansgirg and Chroomonas coerulea (Geitler) Skuja. We examined the morphology and ultrastructure of these species by light microscopy, scanning electron microscopy, and transmission electron microscopy. These two Chroomonas species were blue-green colored and ovate to oval-shaped. Chroomonas nordstedtii was characterized by two Maupas ovals with hexagonal periplast plates, whereas C. coerulea was characterized by one eyespot with rectangular periplast plates. A molecular phylogeny with data from nuclear SSU rRNA and chloroplast rbcL genes revealed that Korean C. nordstedtii formed a distinct clade with NIES-708, NIES-1004 from Japan, and UTEX 2779 from Colorado, USA, while C. coerulea formed a clade with ACOI 1366 from Portugal.
A Leri-Weill dyschondrosteosis patient confirmed by mutation analysis of SHOX gene
Won Bok Choi,Seung Hyeon Seo,Woo Hyun Kim,김수영,Min Jung Kwak 대한소아내분비학회 2015 Annals of Pediatirc Endocrinology & Metabolism Vol.20 No.3
Leri-Weill dyschondrosteosis is characterized by SHOX deficiency, Madelung deformity, and mesomelic short stature. In addition, SHOX deficiency is associated with idiopathic short stature, Turner syndrome, and Langer mesomelic dysplasia. We report the first case of a Leri-Weill dyschondrosteosis patient confirmed by SHOX gene mutation analysis in Korea. The patient, who was a 7-year-old female, showed short stature. Her height and weight were 108.9 cm (<3rd percentile) and 19.7 kg (5th–10th percentile), respectively. Her arm span, height of trunk, leg length, and sitting length were 100.5 cm, 58 cm, 50.9 cm, and 62.5 cm, respectively. Her body proportion was 1.13:1. Extremities to trunk ratio was 2.61. Her hand radiograph showed Madelung deformity. And the growth hormone stimulation test showed a normal response. Furthermore, because of Madelung deformity with idiopathic short stature, she was suspected of SHOX deficiency. We performed SHOX gene mutation analysis and found a c.491G>A (p.W164X) mutation of the SHOX gene. Accordingly, this patient was diagnosed with Leri-Weill dyschondrosteosis. Recently, many mutations have been reported in the SHOX gene. However, to date, mutation analysis of the SHOX gene for Leri-Weill dyschondrosteosis has not been reported in Korea as yet. We report the first case of a Leri-Weill dyschondrosteosis patient confirmed by mutation analysis of the SHOX gene.
Nonlinear Optical Fibers for Electro-optic Applications
Won-Taek Han,Bok Hyeon Kin 한국세라믹학회 2007 세라미스트 Vol.10 No.3
Fabrication and electro-optic applications of glass optical fibers were reviewed. Theoretical description on the electro-optic Kerr effect in glass optical fibers, particularly for the second-order optical nonlinearity was given. Fabrication procedure and the characterization of the nonlinear electro-optic fibers with internal electrodes were described. Several electro-optic devices based on the polarimetric cells made by the nonlinear optical fibers with internal electrodes were also discussed with the experimental results on the electro-optic effect.
현원복,Hyeon, Won-Bok 한국과학기술단체총연합회 2000 과학과 기술 Vol.33 No.8
2005년 태평양횡단 여객기는 비디오 아케이드와 체육관과 병실 그리고 어린이 육아실은 물론 테니스코트까지 갖춘다. 탑승객들은 무료함을 달래기 위해 기내의 맥도널드 프랜차이즈를 찾고 면세점에서 쇼핑도 한다.