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꼬막, Tegillarca granosa 아가미의 미세구조
마경화,이정식,Ma, Kyung-Hwa,Lee, Jung-Sick 한국현미경학회 2003 Applied microscopy Vol.33 No.3
광학현미경과 투과전자현미경을 이용하여 꼬막, Tegillarca granosa 아가미의 미세구조를 기재하였다. 꼬막의 아가미는 전형적인 사새형 아가미 구조를 가진다. 새엽은 다수의 측면섬모대와 정단섬모대를 가지며, 혈림프동을 둘러싸고 있는 새엽 상피층은 단층으로 상피세포, 섬모세포 그리고 분비세포들로 이루어져 있다. 상피세포들은 대부분 미세융모를 가진 편평형이다. 섬모세포는 원주형으로 두 종류(A와 B)로 구분되는데, A형 섬모세포는 B형 섬모세포에 비해 분포 비율이 높으며, 세포질의 전체적인 전자밀도는 낮다. 횡단면 표본에서 섬모 축사는 전형적인 "9+2" 구조를 나타냈으며, 기저 중심립은 "$2{\times}9$"의 구조를 보였다. 분비세포들은 새엽의 정단부에서 주로 관찰되며, 분비과립의 특징에 따라 세 종류 (A, B, C)로 구분할 수 있다. A형 분비세포는 다른 분비세포들에 비해 분포정도가 높고, 전자밀도가 낮은 분비과립을 함유한다. B형 분비세포는 막으로 싸여진 전자밀도가 높은 분비과립을 가지며, C형 분비세포들의 분비과립은 타원형으로 중심부의 균질한 물질을 과립상의 물질들이 싸고 있는 형태이다. Histology and ultrastructure of the gill in the granular ark, Tegillarca granosa are described using light and transmission electron microscopy. The gill of the clam have typical structure of the filibranch type. The gill filament have several band of lateral and apical cilia. The epithelial layer surrounding the hemolymph sinus is simple and consists of epithelial cells, ciliated cells and secretory cells. The epithelial cells are usually squamous and covered with microvilli. The ciliated cells are usually columnar and can be divided into two types (A and B). Type A cells are more abundance and have lower electron density than B cells. Ultrastructure of the cilia showed that '9+2' microtubular structure of the axial filament and '$2{\times}9$' proximal centriole structure in the cross section. Secretory cells are mainly observed in the apical region of the filament and can be divided into three types of A, B and C with morphological features of the secretory granules. Type A cells of oval shaped are more abundance than other secretory cells and contains numerous secretory granules of low electron dense. Type B cells contains secretory granules of membrane-bounded and high electron dense. Secretory granules of type C cells are elliptical and fine granules surrounding the homogeneous core materials.
구강편평세포암종과 법랑아세포종에서 c-fos, c-jun의 발현에 관한 면역조직화학적 연구
마경화,조재오 대한구강악안면병리학회 2005 대한구강악안면병리학회지 Vol.29 No.3
The purpose of this study was to evaluate the role of c-fos and c-jun expression in the oral squamous cell carcinoma and ameloblastomas. For this study, 12 subjects diagnosed as squamous cell carcinoma and 7 subjects of ameloblastomas referred to the Dept. of Oral Path. School of Dentistry, Kyung Hee University, 2 subjects of normal oral mucosa without any inflammatory changes were used as experimental, control groups respectively. All the tissues ; experimental and control group were fixed in neutral formalin solution and embedded in paraffin, serial tissue section were made 5㎛ in thickness and processed in the standard way for immunohistochemical method, using primary and secondary antibodies, for c-fos (Anti-c-fos protein, rabbit polyclonal kit at 1:100 dilution), c-jun( anti-c-jun protein, rabbit polyclonal at 1:100 dilution), all BioGenex U.S.A. made, followed by the Streptavidin - Horse Radish Peroxidase(InnoGenex, Human-Avidin kit) application, counter stained with Mayer's hematoxylin stain method, mounted. And examined under the biologic microscope, with the criteria-(no epithelial stain), +(weak or focal epithelial stain), ++(moderate or focal intensive epithelial stain), +++(intense generalized epithelial staining) for the epithelial, and connective tissue component in squamous cell carcinomas, ameloblastomas and normal mucosal epithelium on each. Attained results as follows ; 1. In oral mucosa, c-fos and c-jun intensely expressed on the all cell layers except on the basal layer. Intense reaction is noted in the c-jun than in the c-fos. and a few cells with positive cytoplasm, negative nuclear are scattered in all layer. 2. The response to c-fos in ameloblastomas, is various according to the histological type, but intense resposes are nodted in nuclear and cytoplasm on the tall columnar cells at the periphery of the follicles compare to that on the stellate cells. 3. The respone to c-fos in squamous cell carcinoma, intense reaction is noted in cytoplasm and nuclei of the tumor cells in well differentiated, poorly differentiated type. 4. The response to c-jun in ameloblastoma, it is noted that moderate respone in nuclear and cytoplasm, at the tall columnar cells at the periphery of follicular or plexiform type but intense respone was notes on the columnar cells, and stellate cell in cytoplasm and nuclear of acanthomatous type. 5. The respon to c-jun in squamous cell carcinoma, it is noted that intensive responses only in cytoplasm in well differentiated type, but intensive responses in nuclei and cytoplasm in the poorly differentiated type are revealed. Intensive responses on c-fos, c-jun were noted on the high atypical cells. This results suggest that c-fos and c-jun may be affected to the reactivation on growth and development of the squamous cell carcinoma.
치근낭에서 EGF, EGFR, aFGF, bFGF, FGFR 발현에 관한 면역 병리학적 연구
마경화,조재오 대한구강악안면병리학회 2003 대한구강악안면병리학회지 Vol.27 No.3
The purpose of this study was to evaluate the role of EGF(Epidermal Growth Factor), EGFR(Epidermal Growth Factor Receptor), aFGF(acidic Fibroblast Growth Factor, FGF-1), bFGF(basic Fibroblast Growth Factor, FGF-2), FGFR(Fibroblast Growth Factor Receptor) in the development of radicular cyst. For this study 37 subjects, diagnosed as radicular cysts. referred to the Dept. of Oral Path. College of Dentistry, Kyung Hee University, were used as experimental group. And for control group, 2 subjects of normal oral epithelium without any inflammatory changes were used. All the tissues; experimental and control group were neutral formation fixed and paraffin embedded. serial tissue section were made at 5㎛ and processed in the standard way for immunohistochemical method, using primary antibodies against, EGF(Antirabbit Ig G at 1:100 dilution), EGFR(Antimouse Ig G at 1:100 dilution), aFGF(Antirabbit Ig G, rabbit kit at 1:100 dilution), bFGF(Antirabbit Ig G, mouse kit at 1:100 dilution), FGFR(Antimouse Ig G mouse kit at 1:100 dilution), all BioGenex U.S.A. made except EGFR(Chemicon U.S.A.) followed by the Streptavidin - Horse Radish Peroxidase (InnoGenex Human-avidin kit) application, counter stained with Meyer's hematoxylin stain method. And examined under microscope, graded 0(no epithelial stain), +(weak or focal epithelial stain), ++(moderate or focal intensive epithelial stain), +++(intense generalized epithelial staining) for the epithelium, and connective tissue of cyst wall. 1. EGF, EGFR, aFGF, bFGF, FGFR showed more intense staining on radicular cysts compare to that on the normal mucosa. 2. EGF, EGFR, aFGF, bFGF, FGFR stained in mucosa, submucosa of the control group and also stained on the lining epithelium, connective tissues of cyst wall in the experimental group. EGF, EGFR, aFGF, bFGF, FGFR take a part in the development of the radicular cyst.