• Title/Summary/Keyword: Vacuoles

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The Beneficial Effects of Vitamin E on the Irradiation-induced Testis Damage

  • Ahn, Seung-Ju;Kim, Kgu-Hwan
    • Biomedical Science Letters
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    • v.17 no.3
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    • pp.239-243
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    • 2011
  • Radiation exposure may cause tissue damage by ionized or excited atoms. The molecules are transformed from water or they directly interact with cells. Antioxidants such as vitamin E, vitamin C are used to reduce the interference of radiation. Especially, vitamin E inhibits the formation and accumulation of lipid and oxidation and the activity of drug-metabolizing enzymes. After irradiation of 3 Gy to the testis, the entire shape of testis was partly depressed and an irregular vacuole was observed to the edge. The 3 Gy group after treatment with vitamin E showed the low destruction of spermatogonia and partial tissue damage as compared to the 3 Gy group. Vitamin E inhibited the production of vacuoles from the cell death and generated the block to prevent the condensation of the seminiferous tubules.

Vegetative Anatomy and Tetrasporogenesis in Stoechospermum marginatum (C. Agardh) Kűtzing (Dictyotales, Phaeophyceae)

  • Bhamrah, Gunwant;Kaur, Inderdeep
    • ALGAE
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    • v.20 no.4
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    • pp.315-324
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    • 2005
  • Anatomical organization of Stoechospermum marginatum reveals small cortical cells with moderately dense cytoplasm, overlying a multilayered medulla comparatively poor in cytoplasmic contents. The anticlinal walls of cortical cells show local thickenings rich in alginic acids. Sori form on both thallus surfaces and show tetrasporangia, paraphyses and sterile-cells. The unicellular paraphyses are rich in sulphated polysaccharides whereas multicellular ones have abundance of not only polysaccharides, but also of vacuoles and phenols. The sterile-cells are modified cortical cells present on either side of the tetrasporangium and bear cytoplasmic strands towards soral cavity. Various stages of tetrasporogenesis are seen in a single sorus. The developing tetrasporangium shows a two layered wall, where the outer one is rich in alginic acid and inner has sulphated polysaccharides. An apical pad aids tetraspore release. Also involved in the release process are sterile-cells, paraphyses and polysaccharides.

Cytologic Features of Infiltrating Lobular Carcinoma of the Breast in Ascitic Fluid - A Cese Report - (유방 소엽성 암종의 복수의 세포학적 소견 - 1예 보고 -)

  • Lee, Mi-Kyung;Lee, Kwang-Gil
    • The Korean Journal of Cytopathology
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    • v.7 no.1
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    • pp.75-78
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    • 1996
  • We experienced a case of infiltrating lobular carcinoma of the breast in the ascitic fluid. The patient was a 49 year-old woman who presented with a palable mass of 3 months duration in the left upper quadrant of the abdomen and abdominal distension. Five years ago, she had undergone left radical mastectomy with chemotherapy and radiotherapy for infiltrating lobular carcinoma of the breast. The ascitic fluid smears revealed singly scattered small round to elliptical cells, many of which were arranged in characteristic indian-file patterns consisting of 3 to 5 cells. The tumor cells had scanty cytoplasm, rare cytoplasmic vacuoles and marked chromatin clumping with small, but prominent nucleoli.

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Light and electron microscopic studies of a gastric xanthoma (위 황색종의 광학 및 전자현미경적 관찰)

  • Kwon Tae-Jung;Kim Chung-Soak;Moon Young-Myung
    • Applied Microscopy
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    • v.11 no.1
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    • pp.21-28
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    • 1981
  • Gastric xanthoma which is not a true neoplasm and clinically insignificant consists of the small yellowish lesion of the gastric mucosa, frequently of multiple occurrence. Histologically the lesion shows chronic superficial gastritis with intestinal metaplasia and occasional collections of foam cells within the lamina propria. Electron microscopically. the xanthoma, cells are composed of. lipid-laden histiocytes with. many autophagocytic Iysosomes surrounding the cytoplasmic lipid vacuoles. Many residual bodies are also noted. The pathogenesis of the gastric xanthoma is obscure, however it is thought that a previous focal lesion of the gastric mucosa may have been a factor. One case of gastric xanthoma is reported here and a brief review of literature is also made.

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New records of two soil and one marine ciliate species (Ciliophora: Intramacronucleata) from Korea

  • Park, Mi-Hyun;Min, Gi-Sik
    • Journal of Species Research
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    • v.6 no.spc
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    • pp.67-70
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    • 2017
  • Three ciliate species, Australocirrus australis (Foissner, 1995) Kumar and Foissner, 2015, Rimaleptus longitrichus ($Vd^{\prime}a{\check{c}}n{\acute{y}}$ and Foissner, 2008) $Vd^{\prime}a{\check{c}}n{\acute{y}}$ and Foissner, 2012, and Frontonia subtropica Pan et al., 2013, that were previously unreported in Korea were collected from terrestrial and marine habitats in Korea. Using live observation and protargol impregnation, the three species were identified using a combination of the following characteristics: Australocirrus australis, the distance between the anterior pretransverse cirrus and the anteriormost transverse cirrus (0.6-2.1% of body length) and the arrangement of the transverse cirri (oblique row); Rimaleptus longitrichus, the arrange of contractile vacuoles and longitudinal ciliary rows anteriorly spaced; Frontonia subtropica, number of somatic kineties (approximately 115 rows) and vestibular kineties (5 rows).

Osteosarcoma of the Proximal Humerus in a Dog (개의 상완골 근위단에 발생한 골육종)

  • 김정은;엄기동;배재성;강한샘;이문학;이해운;성윤상;이정민;장광호
    • Journal of Veterinary Clinics
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    • v.20 no.2
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    • pp.259-262
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    • 2003
  • A 13-year old male dog with right forelimb lameness, invisible swelling, anorexia and mild depression was referred to Veterinary leaching Hospital, College of Veterinary Medicine, Kyungpook National University. On forelimb radiographic views, periosteal and endosteal proliferation and cortical lysis and extremely aggressive and amorphous periosteal reactions were located along the metaphyseal region of the proximal humerus. Cytologic and histopathologic examinations after amputation showed anaplastic mesenchymal cells that produced osteoid changes, poorly differentiated osteoblast and osteoclast. And also, it included the neoplastic cells with large nucleoli, multiple nucleoli that differ in size and cytoplasm with several clear vacuoles. Based on the physical examination and laboratory, radiolographic, cytologic and histopathologic findings, this case was diagnosed as osteosarcoma of the proximal humerus.

Neoparamoeba sp. Infection on Gills of Olive Flounder, Paralichthys olivaceus in Korea

  • Kim, Hyoung-Jun;Cho, Jae-Bum;Lee, Mu-Kun;Huh, Min-Do;Kim, Ki-Hong
    • Journal of fish pathology
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    • v.18 no.2
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    • pp.125-131
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    • 2005
  • Amoebic gill disease of flounder, Paralichthys olivaceus was diagnosed at commerical culture facility in South Korea. The amoeba was identified as a species of the genus Neoparamoeba based on the morpholgical characteristics of trophozoites. Transmisson electron microscopy revealed the presence of a symbiotic organism, parasome in the cytoplasm and dense glycocalyx on the surface of the trophozoites. They lacked the boat-shaped microscales on the surface and contained numerous vacuoles and channels, mitochondria in the cytoplasm. Colonization of amoebae on gill tissue elicited extensive fusion and hyperplasia of gill lamella.

Role of Fermentation in Improving Nutritional Quality of Soybean Meal - A Review

  • Mukherjee, Runni;Chakraborty, Runu;Dutta, Abhishek
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.11
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    • pp.1523-1529
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    • 2016
  • Soybean meal (SBM), a commonly used protein source for animal feed, contains anti-nutritional factors such as trypsin inhibitor, phytate, oligosaccharides among others, which limit its utilization. Microbial fermentation using bacteria or fungi has the capability to improve nutritional value of SBM by altering the native composition. Both submerged and solid state fermentation processes can be used for this purpose. Bacterial and fungal fermentations result in degradation of various anti-nutritional factors, an increase in amount of small-sized peptides and improved content of both essential and non-essential amino acids. However, the resulting fermented products vary in levels of nutritional components as the two species used for fermentation differ in their metabolic activities. Compared to SBM, feeding non-ruminants with fermented SBM has several beneficial effects including increased average daily gain, improved growth performance, better protein digestibility, decreased immunological reactivity and undesirable morphological changes like absence of granulated pinocytotic vacuoles.

Cucumber Mosaic Cucumovirus-CARNA5 Causing Bud Necrosis on Table Tomato

  • Park, Hong-Soo;Ryu, Jae-Ki;Ahn, Kyung-Ku;Cho, Jeom-Deog;Kim, Jeong-Soo
    • The Plant Pathology Journal
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    • v.17 no.3
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    • pp.169-173
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    • 2001
  • Virus disease occurred up to 62% in average in the greenhouse production of table tomato Seokwang in Suwon, Korea. From symptomatic transition of the labeled tomatoes, two different symptoms, mosaic and bud necrosis, were developed independently. Cucumber mosaic virus necrosis strain (CMV-N) was isolated from table tomato showing bud necrosis symptoms. The isolate caused the bud necrosis on four tomato cultivars and locally infected Chenopodium spp. and Vicia faba by mechanical inculation. The 5th RNA segment, satellite RNA, was identified from CMV-N-infected plants by dsRNA analysis. Crystals of virus particles were observed in cytosols and vacuoles. The virus particles of CMV-N presented abundantly in xylem vessel.

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Ultrastructural Changes in the Cortical Cell Mulberry Trees(Morus)during Wintering Period (越冬期 뽕나무 가지 皮層部 細胞內 微細構造의 變化)

  • 최영철;유근섭;안영희
    • Journal of Sericultural and Entomological Science
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    • v.40 no.2
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    • pp.91-96
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    • 1998
  • In relation to cold acclimation, this experiment was carried out to understand the changes of the cortical cells in the living barks of the mulberry during wintering period. The living barks of three mulberry varieties(Kaeryangppong, Shinilppong and Yongcheonppong) were sampled from December, 1995 to March, 1996. The result of this experiment was summarized as follows. The cortical cells in the living barks of the mulberry in December were filled with small vacuoles. Plastids and mitochondrias were located near the nucleus. At this time, almost all starch granules disappeared from the plastids. In January and February, mitochondria, palstids and microbodys of the cortical cell were observed. As increasing temperature from March, dictysomes and polysomes were sparse. Again, starch granules disappeared were observed in the plastids. From the above result. starch granules in plastide of the cortical cell of the mulberry disappeared during cold acclimation stage. After late January, Proplastid was observed in the cortical cell and the ultrastructures of cortical cell were actively changed.

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