• Proceedings of the Korean Nuclear Society Conference
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• 1998.05b
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• pp.697-702
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• 1998

방사선에 의해 유발되는 난소내 난포의 폐쇄가 apoptosis를 매개로 하여 일어나는지 조사하고자 면역조직화학적 방법을 이용하여 실험을 수행하였다. 미성숙 생쥐 (3주, ICR)에 감마선을 조사하였으며, 조직절편을 제작한 후 TUNEL 방법에 의한 in situ 3'end labelling 면역조직화학 염색을 실시하였다. 전반적인 난소의 상태를 파악하고자, 일반적인 hematoxylin-eosin(HE) 염색을 실시하여 대조하였다. 면역조직화학 염색은 apoptosis가 일어난 난포를 시각적으로 구분해낼 수 있는 효과적인 방법임이 실험적으로 확인되었다. ApopTeg/HE 비율을 볼 때, R군은 6h에서 12h 에 높은 값을 보였고, 8d군에서 다시 증가하는 양상을 보였으며 이같은 결과는 실험동물의 난소내 과립세포의 apoptosis가 방사선 조사후 6시간부터 일어나기 시작하여 점차 증가된다는 사실을 나타낸 것이다. 결론적으로 방사선에 의한 난포의 폐쇄는 과립세포의 apoptosis를 매개로 하여 일어남을 알았다.

• The Journal of the Korean dental association
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• v.9 no.11
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• pp.673-677
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• 1971

The buccal mucosa was observed histochemically in male rats which were injected with methionine. The staining methods were proceed by means of periodicacid-Schiff reaction, toluidine blue stain, alloxan-Schiff reaction, Mallory's aniline blue stain, Lillie's modification of Bielschowsky method and hematoxylin-eosin stain. The results of the experiment were summarized as follows: 1) PAS reactions of basement membrane and lamina propria increased after 3 and 5 days of methionine administration. 2) Metachromasia of stratum spinosum increased after 3 days of methionine administration. 3) Alloxan-Schiff reactions of stratum granulosum and stratum spinosum increased after 7 days of methionine administration. 4) In the lamina propria, aniline blue staining of collagenous fibers increased after 7, 10 and 14 days of methionine administration.

• Environmental Analysis Health and Toxicology
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• v.11 no.3_4
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• pp.45-51
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• 1996

Histopathological changes of gills and caudal fins isolated from fishes, Cyprinus carpio, Carassius auratus, and Hernibarbus labeo, which were killed by oxygen deficiency or toxic chemicals, were studied. The toxic chemicals were HCl, NaOH, chloroform, benzene, heavy metals(Cu, Cr, Zn, Pb, Hg), and o-dichlorobenzene. The exposure level was enough to kill the fishes within 30 minutes. Oxygen deficient water was prepared by aeration of nitrogen gas and the oxygen concentration was less than l ppm. Cryocutting was used for the rapid preparation of tissue slides and the tissues were stained by hematoxylin/eosin. In the fishes killed by hazardous chemicals, congestion and/or hyperplasia of secondary lamella and erosion of fin were found as the major histopathological changes. Whereas, these characteristics were not observed in gills or caudal fins of fishes killed by oxygen deficiency. These different bioindications appeared in the fishes killed by toxic substances or natural causes, can be used for the rapid identification of the causes of fish kills.

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.54.2-54.2
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• 2011

DTBP (dimethyl 3,3`-dithiobispropionimidate) was applied to collagen and gelatin coating on BCP granules and a crosslinking agent. The DTBP crosslinking was done for decreasing the solubility of the coating and hence increasing the stability. The nanostructure of collagen and gelatin coating surfaces were observed by SEM technique. Based on the DSC thermograms and FT-IR spectrums, the crosslinkings were confirmed between collagen molecules and gelatin molecules. The compressive strength was measured before crosslinking and after that. In-vitro study was carried out by measuring cell viability and observing cell morphology after DTBP crosslinking. Moreover, the proliferation ability of MG-63 osteoblast-like cells on the crosslinked BCP granules was evaluated by Western blot assay. The BCP granules were implanted into rabbit femur for 4 weeks and 12 weeks. The bone tissue formation was analyzed with micro-computed tomography (micro-CT) and histological analysis was also carried out by hematoxylin and eosin (H&E) staining for visualization of cells.

• The Journal of the Korean dental association
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• v.10 no.1
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• pp.29-33
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• 1972

The author has studied histochemically on the giant cells appeqring in the 10 giant cell lesions which had been collected from the biopsies at the deaprtment of oral pathology, college of dentistry, Seoul national university and dental sections of several hospitals in Seoul. The results obtained were as follows: 1. The giant cells varied in size had 2 to 10 nuclei without any mitotic figures. 2. The giant cells showed high granularity in cytoplasm, extreme irregularity in outline of nuclear and cytoplasmic membrane, and very large and prominent nucleoli. 3. The giant cells were reacted moderately by Periodic Acid-Schiffraction. 4. The chtoplams of giant cells were stained moderately of deeply with Pyronin, and their nuclei with Methyl green. 5. In the sections stained with Iron-Hematoxylin, the giant cells showed microvacules and fine granular type mitochondria aggregated close to nuclei but not phagocytosed materials.

• Imaging Science in Dentistry
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• v.41 no.1
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• pp.35-38
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• 2011

Necrotizing sialometaplasia (NS) which mimics malignancy both clinically and histopathologically is an uncommon benign, self-limiting inflammatory disease of the mucus-secreting minor salivary glands. The lesion is believed to be the result of vascular ischemia that may be initiated by trauma. Till date, the diagnosis of NS remains a challenge. This report demonstrates a case of NS in a 73-year-old male patient who presented with an ulcerative lesion in his palate. He had a history of local trauma and was long-term user of salbutamol inhaler. An incisional biopsy was carried out and the diagnosis was established through history, clinical examination, histopathology using Hematoxylin and Eosin stain. The patient was given symptomatic treatment and the lesion healed in about 7 weeks.

• Parasites, Hosts and Diseases
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• v.55 no.5
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• pp.565-568
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• 2017

An oval-shaped mass with a smooth surface was found in the ear canal of a 22-month-old male infant. Although the mass appeared to be almost entirely blocking the ear canal, it was successfully removed under a surgical microscope without general anesthesia at the outpatient department. Under an optical microscope with hematoxylin and eosin staining, the specimen was observed to have a cuticle with a serrated surface and a pore canal, as well as parts of the capitulum, salivary glands, muscles, midgut, and the legs. The specimen was identified as a hard tick of the family Ixodidae, based on gross and histological findings. This paper is the first report in Korea on the diagnosis and treatment of a tick bite in the ear canal.

• The Journal of the Korean dental association
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• v.12 no.12
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• pp.913-918
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• 1974

The authors have observed clinically and histopathologically on two cases of rhabdomyosarcomas occurred in the oral cavity. The results were as follow: 1. A case of adult pleomorphic rhabdomyosarcoma, involving the right mandibular third molar area of 52 year old male, revealed pathological fracture of the right mandibular angle area. Microscopically, sections of this tumor showed cross striations by staining of phosphotungstic acid hematoxylin. 2. A case of embryonal alveolar rhabdomyosarcoma, involving the right buccal area of one year and ten months old female, revealed severe bone destruction on the right mandibular body area. Microscopically, sections of this tumor did not show cross striations.

• Asian-Australasian Journal of Animal Sciences
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• v.10 no.1
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• pp.114-117
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• 1997

A total of 77 Black Bengal goats (67 females and 10 males) of 3.5 to 5.0 years old between 18 and 20 kg liveweights were used in this study. The whole liver with gall-bladder from respective carcass was collected at slaughter following fecal and postmortem examinations. Tissue sections of all lobes of each liver were prepared and stained with hematoxylin and eosin following a standard procedure. Results confirmed the presence of flukes surrounded by fibrous capsule in the liver. All the animals were suffering from chronic Fasciola gigantica infections. The blood vessels in most of the liver tissue were thickened due to proliferation of fibrous tissue around them. Focal infiltration of lymphocytes in the lobules, patches of focal accumulation of neutrophils and eosinophils were found in all the liver tissue. Proliferations of new bile ductules in the hepatic trinity around the bile ducts that were clogged by the flukes were also observed in most tissue sections.

• Parasites, Hosts and Diseases
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• v.47 no.1
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• pp.69-71
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• 2009

The tegument of tapeworms is known to be composed of an outer syncytial cytoplasm layer which includes microtriches and cytoplasmic organelles (= syncytial layer), and a parenchymatous cytoplasm layer that contains subtegumental cell nuclei (= subtegumental layer) and organelles. In the present study, separation of the syncytial layer of the sparganum, the plerocercoid stage of Spirometra mansoni, was tried using urea as the chemical reagent. Histological sections were prepared to visualize the status of separation after staining with hematoxylin and eosin. The results showed that the syncytial layer of the sparganum tegument which includes microtriches and cytoplasmic organelles were successfully separated from the parenchyma using 3 M urea.