• Title/Summary/Keyword: 과립

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Ultrastructure of the Midgut Epithelial Cells in the Mosquito Larvae, Anopheles sinensis Wiedemann (중국얼룩날개모기 유충내에 있는 중장 상피세포들의 미세구조)

  • Yu, Chai-Hyeock
    • Applied Microscopy
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    • v.34 no.3
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    • pp.199-209
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    • 2004
  • The migut epitheluim of the last instar larva in the mosquito larvae, Anopheles sinensis was observed with electron microscopes. The midgut epitheluim of the mosquito larva is composed of a single-layered columnar absorptive cells, regenerative cells and secretory granular cells. The free surface of the columnar absorptive cells has a regular array of microvilli 'brush border', while cell membranes close to the basal lamina are extrmely infolded and a lot of mitochondria are concentrated in those processes. The columnar absorptive cells also contain cell organelles expected to be found in absorptive cell. Midgut regenerative cells which are positioned basally in the epithelium form the groups, which are called 'nidi', composed of 1 or $2{\sim}3$ cells, they show darker appearance than the columnar absoptive cells. The secretory granular cells contain numerous electron dense granules, $200{\sim}400$ nm in diameter. The cone shaped secretory granular cells are located in the basal portion of the midgut epitheluim. The epithelium is surrounded by the subepithelial space and muscle bundles. The subepithelial space, which is filled with fibrous connective tissue, is innervated by many axon cells and tracheoles.

Sino-orbital Granulocytic Sarcoma Causing Bilateral Proptosis As an Initial Manifestation of Acute Myelogenous Leukemia (AML): A Case Report (급성 골수성 백혈병의 최초 증상으로 안구 돌출을 초래한 양측 안와-부비동 과립세포육종: 증례 보고)

  • Kim, Hee-Sun;Je, Bo-Kyung;Lee, Young-Hen;Kim, Baek-Hyun
    • Investigative Magnetic Resonance Imaging
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    • v.14 no.1
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    • pp.74-77
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    • 2010
  • Granulocytic sarcoma is a manifestation of myelogenous leukemia, which means a solid mass consisting of primitive precursors of the granulocytic series of white blood cells. We present CT and MR imaging findings of bilateral sino-orbital granulocytic sarcoma in a 22-month-old boy. The mass involved bilateral orbital fossa which resulted in bilateral proptosis. Moreover, the mass extended to the almost skull base including paranasal sinuses, maxilla, temporal bone, zygomatic bone, sphenoid bone, ethmoid, and palatine bone. The adjacent dura was continuously thickened and the lower half of cavernous sinus was also involved. The patient was diagnosed as AML (M5) with t(8,21) translocation through a chromosome study from the bone marrow.

Immunocytochemical Investigation on the Intracisternal Accumulations of Storage Protein in Pea Cotyledon Cells (완두 자엽세포의 소포체 내강에 축적된 저장 단백질에 대한 면역세포화학적 연구)

  • Jeong, Byung-Kap;Park, Hong-Duok
    • Applied Microscopy
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    • v.31 no.2
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    • pp.199-206
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    • 2001
  • In 1980s, the fragmentation or subdivision of protein deposits at the periphery of protein storage vacuole was suggested as the only route of PB development in pea cotyledon cells. Since then, other independant processes such as terminal dilation , transformation and de novo development have been discussed as alternative routes for PB development, and today, these multiple mechanisms of PB development are accepted as a result of active investigations. For analysis of the protein accumulations in the ER cisternae during seed development, immunocytochemical gold labellings were applyed on the single cells separated by enzymatic digestion from cotyledon tissue. Anti-legumin labellings at the early stage, and anti-vicilin labellings at the intermediate stage were observed on the protein-filled ER. The $\alpha-Tip$, which is the ER retention protein, was labelled somewhat at late stage, and PPase, a sort of tonoplast membrane protein, was labelled at early stage.

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Burning Characteristics of Smoke Generator of Pesticides Depending on Combustible Carrier and Formulation Type (제형과 가연성 담체에 따른 농약 훈연제의 연소 특성)

  • Lim, He-Kyoung;Kim, Yong-Whan;Cho, Kwang-Yun;Yu, Ju-Hyun
    • Applied Biological Chemistry
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    • v.47 no.3
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    • pp.325-331
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    • 2004
  • In order to study the effect of formulation type on the burning characteristics of smoke generator, fenarimol smoke generators containing the powdered rice chaff as a combustible carrier were prepared by molding the kneaded mixtures into various shapes. Smoke generators containing wood flour as a combustible carrier were also prepared and compared with smoke generators containing rice chaff. All the fenarimol smoke generators moulded into powders, granules, and rods continuously burned out when the sodium chlorate content exceeded 11%. Regardless of their types, the highest smoking rate of fenarimol was observed with more than 13% of sodium chlorate. The smoking rate of active ingredient followed with the increasing order of powder (64.5%) < granule (78.4%) < rod (90.9%). The smoke rod was robust, easy to ignite, and showed the highest smoking rate among the tested formulations. When the mixture of wood flour and anti-flame agent was used as a combustible carrier, the burning rate was so slow that wood flour formulation seemed to be more suitable to a slow-burning fumigant rather than smoke generator.

Inhibitory Effects of Soyasaponins on Antigen-induced Degranulation in RBL-2H3 Cells (Soyasaponin의 RBL-2H3 세포에서 탈과립화 억제 효과)

  • Yang, Seung Hwan;Lee, Jung A;Lee, Jae Yeon;Ahn, Eun-Kyung;Shin, Tai-Sun;Tsukamoto, Chigen;Chung, Gyuhwa;Suh, Joo-Won
    • Journal of Applied Biological Chemistry
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    • v.58 no.3
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    • pp.287-290
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    • 2015
  • Soyasaponins are glycosylated, which gives rise to a wide diversity of structures and functions. We evaluated for inhibitory effects of 4 soyasaponins on antigen-induced degranulation in RBL-2H3 Cells. 4 soyasaponins had shown dose-dependently inhibited histamine and ${\beta}$-hexosaminidase.

Histological Study on the Activated Carbon in the Rat Liver with Toxicated by Lead (활성탄이 납 중독된 흰쥐의 간장에 미치는 조직학적 연구)

  • Chung, Min-Ju;Roh, Young-Bok
    • Applied Microscopy
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    • v.32 no.2
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    • pp.149-156
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    • 2002
  • For investigation of the activated carbon in the rat liver toxicated by lead. Aniamls used $7{\sim}8$ weeks to Sparague-Dewley rat (150 g). The lead acetate (500 ppm) were injected and activated carbon (40 mg/kg) were treated orally for four and eight weeks, respectivelly, and observed by the electron microscope. The group with only lead for 4 weeks, The mitochondria and rough endoplasmic reticulum (rER) were extended and ribosomes dropped from the rER. The group with lead-activated carbon for 4 weeks, The number of lysosomes increased. The shapes of nucleus and rough endoplasmic reticulum observed almost similar with nomally. The group with only lead for 8 weeks, The mitochondria and rough endoplasmic reticulum (rER) were more extended. The group with lead-activated carbon for 8 weeks, the nucleus and rough endoplasmic reticulum was observed nomally.

An Electron Microscopic Study on the Mucosal Epithelial Cell in the Small Intestine of Ground Squirrel, Tamias sibiricus asiaticus Gmelin. (다람쥐(Tamias sibiricus asiaticus Gmelin) 소장 점막 상피세포의 전자현미경적 연구)

  • Roh, Young-Bok;Chung, Kyung-A;Chung, Ji-Sook;Kim, Jung-Sam;Kim, Il
    • The Korean Journal of Zoology
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    • v.38 no.3
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    • pp.388-394
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    • 1995
  • We investigated ultrastuctural change of small intestinal mucosal epithelial cell, columnar cell and mucous cell, of hibernating ground squirrel during activating and hibernating stages. In active columnar cells, many mitochondria and rough endoplasmic reticulum were observed. In hibernating columnar cells, more free nhosome than rough endoplasmic reticulum were observed. In active mucous cells, large and many mucosal granules, mitochondria and rough endoplasmic reticulum were observed. Mucosal granules have been secreted excellently. In hibernating mucous cells, small and little mucosal granules and many free ribosome were observed.

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Production of spherical granule type yogurt with improving convenience and preservation (편리성 및 저장성이 증진된 구형과립 요구르트 제조)

  • Shin, Myung-Gon
    • Food Science and Preservation
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    • v.24 no.5
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    • pp.559-564
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    • 2017
  • Yogurt contains many microorganisms that are beneficial to human health, and is a probiotic that supplies many nutrients such as calcium and protein. It is difficult to safety preserve for a long time because it possesses a high content of water. To address this problem, powdered "instant" yogurt has been developed, but it has flaws low flowability and solubility. Therefore, yogurt was granulated using a fluidized bed granulator to increase flowability and solubility. The fluidized bed granulator was designed by using response surface methodology (RSM), whose variables were feeding rate (FR), atomization air pressure (AP) and product temperature (PT). After being granulated, the yogurt was analyzed for yield and lactic acid bacteria count. The maximum yield of yogurt granules was 79.42%, at FR of 0.54 mL/min, AP of 2.64 kPa, and PT of $58.18^{\circ}C$, and the colony count for lactic acid bacteria was more than $6log^{10}\;CFU/g$. Therefore, spherical granulation of yogurt using a fluidized bed granulator could be used for making convenient probiotic products with improved flowability and solubility.

Ultrastructural and Histochemical Studies on the Epithelial Cell of Korean Terrestrial Slug (Incilaria frubstorferi) (한국산 육생 민달팽이(Incilaria fruhstorferi)의 표피상피세포에 관한 미세구조 및 조직화학적 연구)

  • 장남섭;임연숙
    • The Korean Journal of Zoology
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    • v.32 no.2
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    • pp.93-106
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    • 1989
  • The species of the slug used in this experiment is the Korean terrestrial slug (Incilaria fruhstorferi), which is examined for the cytochemical and ultrastructural research on the mucous granule-producing cells and the epithelial cells. I. Epidermal tissue According to the part of the epidermal tissue of this slug, the epidermal tissue is divided into the mantle, the foot and the dorsal epidermis. These epidennal tissue are composed of the irregular simple columnar epithelium, which are formed into the sensory epithelial cells, the supporting epithelial cells, the mucous granule-producing cells, and the clear epithelial cells are similar to the sensory epithelial cells. Both the sensory epithelial cells and the supporting epithelial cells are observed between the mantle and the foot epidermis, but the clear epithelial cells are only seen in the dorsal epidermis. II. Mucous granule-producing cell The acid mucous granule-producing cells and the neutral mucous granule producing cells are observed between the irregular simple columnar epithelium of the mantle, the foot and the dorsal epidermis. According to the part of the epidermal tissue, the number of these mucous granule-producing epithelial cells are differently distributed between the epidermis respectively.

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Granular Cell Tumor Arising from the Left Main Bronchus - A case report- (좌측 주기관지에서 발생한 과립 세포종 -1예 보고-)

  • Sea Yeon Ho;Kim Kyung Hwa;Kim Nan Yeol;Kuh Ja Hong
    • Journal of Chest Surgery
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    • v.39 no.3 s.260
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    • pp.244-247
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    • 2006
  • Granular cell tumors (GCT) are uncommon benign neoplasms. Their location is mostly in the the skin, tongue, and breast; appearance in other parts of the body is rare, but it has been reported. They have also been reported to occur synchronously in multiple organs and metachronously in a single organ. The incidence of GCTs in the tracheobronchial tree is unknown and pulmonary GCTs are uncommon, with approximately 100 reported cases in the literature. We present the case of a 33-year-old man with a granular cell tumor of the left main bronchus. The tumor was found at bronchoscopy performed to exclude suspected endobronchial mass with symptoms of pneumonia. Biopsies revealed the histological pattern of a benign granular cell tumor. He underwent resection of the left main bronchus followed by end to end anastomosis of left main bronchus. He has not had any recurrence of the tumor during the 1 year follow-up.