• Korean Journal of Head & Neck Oncology
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• v.17 no.2
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• pp.226-229
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• 2001

Synovial sarcoma is commonly found in the extremities of mesenchymal origin, but rare in the head and neck area. Histopathology is diagnostic and it shows a biphasic pattern with two neoplastic elements; spindle cell, sarcoma like stroma and gland like clefts lined by epitheloid cells. Synovial sarcoma is high-grade neoplasm that expresses epithelial as well as supporting features. This paper presents a case of synovial sarcoma of hypopharynx on 25 years old male. He was treated by surgical excision and postoperative chemoradiotherapy. There were no evidences of local recurrence & distant metastasis for 19 months postoperatively.

• Journal of Yeungnam Medical Science
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• v.6 no.2
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• pp.271-277
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• 1989

There have been reported cases that the Krukenherg tumor had been primary ovarian carcinoma, But the Krukenberg tumor is generally known as one special type of metastatic ovarian carcinoma, which histologically consists of nest of mucin filled signet-ring cells in a cellular, nonneoplastic stroma. The most common gastrointestinal tract origin for Krukenberg tumor is the stomach, and the next frequent is the large intestine. Generally the Krukenberg tumor is difficult to diagnose and treat until somewhat enlarging its size. We experienced a case of the Krukemberg tumor on the remained ovary after the previous unilateral adnexectomy, which was metastasized from adenocarcinoma of stomach. We present this case with a brief review of literature.

• Microbiology and Biotechnology Letters
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• v.22 no.2
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• pp.115-119
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• 1994

White mutant of Ganoderma lucidum(G4142) induced the non-basediocarpous basidiospores(NBB) from the aerial mycelia on agar media by the light illumination. Light was found to be necessary for NBB formation, but it also inhibited the growth of mycelium. The best sporulation was obtained at the periodic exposure of 16 hour light and 8 hour dark. Blue and yellow light were the most effective on sporulation, however, near UV and red light did not induce any spores. Effective light intensity for NBB bearing was about 1,000 lux as white light. Even after 16 days of culture, this strain did not form the pinhead nor chlamydospore. Optimum temperature for the mycelial growth and NBB formation were 30$\circ $C. Ganoderma lucidum G4142 exhibited the formation of stroma after five days of incubation at 30$\circ $C.

• Journal of Ginseng Research
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• v.14 no.3
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• pp.416-420
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• 1990

Ultrastructural and anatomical features of the leaf were studied in Panax ginseng C.A. Meyer(ginseng). The ginseng leaf poorly developed palisade tissue and the size of mesophyll cell was larger and the chloroplast density was lower than that of Glycine max (soyben). Ginseng chloroplast was filled with highly stacked grana and condensely-arrayed thylakoid, so the stroma space was hardly absorbed. However, ginseng mesophyll tissue and chloroplast array did not reduce light energy entering the mesophyll chloroplast, and the high LHCP/CP ratio of ginseng thylakoid resulted in the absorption of excess photon. It is reasonable to assume that 1O1-photogenearation by excess light energy partially resulted from the anatomical and ultrastructural characteristics of the ginseng leaf.

• The Korean Journal of Mycology
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• v.15 no.2
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• pp.76-79
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• 1987

More than 100 samples of the Ascomycetous fleshy fungi were collected and inves­tigated. Among them, 3 genera and 9 species were confimed as unrecorded ones in Korea. Unrecorded genera were Tarzetta, Hypocrea and Mollisia. Unrecorded species were Cyathipodia villosa, C. cupuliformis, Cudonia confusa, Tarzetta catinus, T. cupularis, Rutsroemia petiolorum, Mollisia ventosa, Hymenoscyphus pileatus and Hypocrea rufa.

• Journal of Veterinary Clinics
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• v.35 no.5
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• pp.222-225
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• 2018

The current study describes a case of endometrial polyps accompanied by an open-cervix pyometra in a 15-year-old female Chinchilla Persian cat. The cat was presented with a history of a large mass in the endometrium and purulent discharge from the vulva. Ovariohysterectomy was performed and pedunculated polypoid mass on the endometrium was seen protruded into the uterine cavity. Histologically, the mass was composed of multiple cystically dilated glands surrounded by fibrous stroma. Based on gross and histologic findings, the diagnosis for this case was concluded.

• Korean Journal of Veterinary Research
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• v.57 no.2
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• pp.131-133
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• 2017

A 11-year-old, female Russian Blue cat was presented with anorexia, vomiting, and diarrhea lasting for 3 days. Abdominal ultrasonography revealed a hypoechoic, non-circumferential, and eccentrically formed intestinal loop with altered wall layering and thickening of the tunica muscularis. After surgical resection, histopathologic examination confirmed an infiltrative, round-cell neoplasm composed of sheets and cords of neoplastic mast cells within a fibrotic, edematous stroma. The cat was alive and healthy 6 months after surgery. To the best of our knowledge, this is the first reported case of an intestinal mast cell tumor in a Russian Blue cat in South Korea.

• Current Optics and Photonics
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• v.4 no.2
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• pp.141-147
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• 2020

To understand the cause of the high light transmittance of the human eye, the optical effects of the collagen fibers of the stroma layer, which constitute the majority of the cornea, were analyzed. These collagen fibers, approximately 20 nm in diameter, have a regular arrangement. Accordingly, the optical properties of the collagen fibers and the fiber layer were analyzed by simulation. A standing wave was formed in the incident space by the overlapping incident light and the light reflected by the plate. In addition, it was confirmed that when the collagen fibers are arranged in a layer, the light transmittance periodically changes, depending on the number of fiber layers. The standing wave was formed in the incident space, and the light's intensity distribution was changed by the nanoscale collagen fibers in the section with the collagen layer, which affected the transmittance. To explain this phenomenon, the collagen fiber was defined as a second light source, and an attempt was made to describe the simulation results in terms of overlap of the incident light with the light emitted from the collagen fiber.

• Journal of Plant Biology
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• v.19 no.4
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• pp.100-106
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• 1976

The fine structure of the callus induced from epidermis of Panax ginseng leaves cultured on Murashige & Skoog medium plus kinetin 0.1mg/l, NAA 0.2mg/l and 2.4-D 0.5mg/l was observed. The cells composing callus tissue are mononucleus. Three types of cells were identified; cells with abundant cytoplasm, cells with relatively differentiated vacuoles and with numerous starch grains in the plastids and ones with highly differentiated vacuoles and with unsaturated lipid granules. Prolamellar body, plastid lamellae, plastid globules, stromacenter, fine tubules, crystal-containing body and DNA-like structures were observed in the stroma of the plastids. The chromoplasts were identified in some cells believed as the mother cells of secretory cells in secretory ducts. Curved or straight micro-fibrils of 100~150A in diameter were observed in the cytoplasm. And the characteristics of cell organelles and cell inclusions and the vacuole formation in callus tissues were discussed.

• The Korean Journal of Cytopathology
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• v.1 no.2
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• pp.164-169
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• 1990

Carcinsarcoma is an uncommon pulmonary malignancy characterized by carcinmatous parenchyma and sarcomatous stroma. The cytologic, immunohistochemical and ultrastructural features of a case of pulmonary carcinosarcoma suspected by fine needle aspiration cytology is presented. Only bizarre spindle cells arranged in loose groups, in microtissue fragments and in a dissociate fashion were present on the aspiration smears. They were markedly positive for vimentin. The epithelial component was not found, which was probably due to marked paucity of carcinomatous component that was proved by histologic examination of the resected tumor. The diagnosis of pulmonary carcinosarcoma should be conidered whenever poorly differentiated epithelial ceil groups with a malignant mesenchymal component set in a myxoid background are seen in a pulmonary cytology specimen.