• Title/Summary/Keyword: 뱀

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An histological and immunohistochemical study of endocrine cells in the gastrointestinal tract of the Amur lizard (Takydromus amurensis) (아무르장지뱀의 위장관 내분비세포에 관한 조직화학적 및 면역조직화학적 연구)

  • Lee, Hyeung-sik;Lee, Mal-soon;Lee, Jae-hyun
    • Korean Journal of Veterinary Research
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    • v.35 no.1
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    • pp.67-73
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    • 1995
  • The distribution and the frequency of endocrine cells in the GIT of the Amur lizard(Takydromus amurensis) were investigated using silver techniques and immunohistochemical method. Only argyrophil cells stained by the Grimelius technique were found numerous in the pyloric glands and moderate in the duodenum. Two types of immunoreactive endocrine cells were identified by immunohistochemical method. Bovine CG-immunoreactive cells were demonstrated the entire GIT. BPP-immunoreactive cells were restricted in the duodenum and the ileum. The results showed that: the number of argyrophil cells was lower than the number of cells stained with bovine CG antiserum. Therefore, bovine CG-immunostaining and the Grimelius silver technique did not correspond with various endocrine cells in the Amur lizard.

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척추동물의 Isozyme에 관한 비교연구: III. 한국산 뱀목의 Lactate 및 Malate Dehydrogenase Isozyme

  • 김순옥;조동현;박상윤
    • The Korean Journal of Zoology
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    • v.16 no.1
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    • pp.55-65
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    • 1973
  • MDH and LDH isozymes of various tissues of serveral snakes which belong to Colubridae, Crotalidae and Viperidae were studied. MDH isozymes were appeared as two bands in all species. Four LDH isozymes were found inall species of Colubridae, Crotalidae and Viperidae. LDH isozymes of muscle and liver had fundamentally the same pattern. On the other hand, there were two LDH isozymes in the heart of all species and the pattern of heart LDH isozyme was reverse of the pattern in muscle. The pattern of LDH isozymes of stomach tissue can be thought as the same pattern with that of heart in all species, but in the stomach tissue of Crotalidae and Viperidae there were four LDH isozymes.

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Ca-release Channel of the Sarcoplasmic Reticulum of the Snake (Reptile) Skeletal Muscle (뱀 (파충류) 골격근 소포체 칼슘유리 채널)

  • Nam, Jang-Hyeon;Seok, Jeong-Ho
    • The Korean Journal of Pharmacology
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    • v.32 no.1
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    • pp.57-66
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    • 1996
  • To investigate properties of Ca-release channel in the reptile skeletal muscle, electrophoretical analysis, purification of RyR, $[^3H]ryanodine$binding study, and $^{45}Ca-release$ were carried out in the SR vesicles prepared from the snake skeletal muscle. The snake SR vesicle has the single high molecular weight protein band on SDS-PAGE, and its mobility was similar with that of rat skeletal SR vesicles. The high molecular weight band on SDS-PACE was found in the $[^3H]ryanodine$ peak fractions $(Fr_{5-7})$ obtained from the purification step of the RyR. Maximal binding site and Kd of the snake SR RyR were 6.36 pmole/mg protein and 17.62 nM, respectively. Specific binding of $[^3H]ryanodine$ was significantly increased by calcium and AMP (P<0.05), but not or slightly inhibited by tetracaine, ruthenium red (5.4%), or $MgCl_2$ (21%). $^{45}Ca-release$ from the SR vesicles loaded passively was significantly increased by the low concentration of calcium $(1{\sim}10{\mu}M)$ and AMP (5 mM)(P<0.05), but significantly decreased by the high concentration $(300{\mu}M)$ of calcium, tetracaine (1 mM), ruthenium red $(10{\mu}M)$, and $MgCl_2$ (2 mM)(P <0.05). From the above results, it is suggested that snake SR vesicles also have the RyR showing the similar properties to those of mammalian skeletal RyR with the exceptions of no or slight inhibition of $[^3H]ryanodine-binding$ by tetracaine, ruthenium red, or $MgCl_2$.

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기계설비인 인터뷰 - "훌륭한 마침표 찍을 수 있도록 마지막 남는 힘까지 최선" 박성민 현대건설 상무

  • 대한기계설비건설협회
    • 월간 기계설비
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    • s.323
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    • pp.44-48
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    • 2017
  • 사무실에 뱀이 나타났다. 종합건설사들은 이 뱀을 어떻게 처리할까? 모 회사는 상부에 보고부터 한다. 어떤 업체는 협력업체를 부른다. 또 어떤 회사는 작전회의부터 한다. 또 다른 업체는 전 직원이 모여 회의를 한다. 직원이 바로 잡는 회사도 있다. 각 업체별 정체성을 우스개 소리로 표현한 말이다. 직원이 바로 잡는 업체는 바로 현대건설이다. 현대건설은 '불도저'란 또 다른 별명이 있다. 6.25 전쟁의 폐허 위에서 국토의 핏줄인 도로를 닦고 끊어진 다리를 연결하고 건물을 세우는 등 아무 것도 없는 불모지에서 불도저처럼 건설산업을 이끌어 왔기 때문이다. 건설산업 발전을 견인한 현대건설이 올해로 창립 70주년을 맞았다. 이번 호에는 지난 2월 7일 상무로 승진한 현대건설 박성민 상무(건축사업본부 건축기술지원실 실장)를 만나 보았다.

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Current Status and Distribution of Reptiles in the Republic of Korea (한국산 파충류의 현황과 분포)

  • Song, Jae-Young
    • Korean Journal of Environmental Biology
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    • v.25 no.2
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    • pp.124-138
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    • 2007
  • In order to characterize the current status and distribution of reptiles currently inhabiting the Republic of Korea, the results of survey data were analyzed in this study. The results of this analysis showed that the reptiles were distributed into two orders, seven families, and 21 species, with the exception of six marine reptiles, including Dermochelys coriacea schlegelii, Chelonia mydas japonica, Caretta caretta, Hydrophis melanocephalus, Hydrophis cyanocinctus, and Pelamis platrrus. Also, the taxonomic revisions of several species were suggested, although this would be ill-advised before further studies can be conducted regarding the current status of marine reptiles in the region.