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  • 1
    Electronic Resource
    Electronic Resource
    Mandibular pseudocarcinomatous hyperplasia (2000)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 37 (2000), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aims: Three unusual cases of pseudocarcinomatous (pseudoepitheliomatous) hyperplasia (PH) affecting chronic osteomyelitic mandibular sequestra are reported to highlight the differences with the various squamous neoplasms which occur in that site. Methods and results: In two patients carrying a mandibular graft following the excision of an ameloblastoma, mucosal ulcers resulted in chronic osteomyelitis. In a third patient, an apical dental infection was associated with fistulated osteomyelitis. Histology of the three sequestra showed an intraosseous squamous proliferation. It was characterized by a peripheral involvement of medullary spaces, the more mature epithelial layer covering the bone trabeculae without intervening stroma, and the basal type epithelial layer surrounding a central fibrovascular core. There were no histological or cytological signs of malignancy. Conclusions: PH shows an inverted pattern when compared with the centro-medullary tumoural islands seen in the various oral or odontogenic squamous neoplasms which occur in the jaws. The lack of signs of malignancy distinguish PH from common squamous cell carcinomas. A short clinical course is an important feature in the distinction of PH from the well differentiated squamous cell carcinomas which may develop in fistulated chronic osteomyelitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2000.00949.x
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  • 2
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    Unknown
    M.-L. DUFRÉNOY. L'Orient romanesque en France (Book Review) (1947)
    Paris : Periodicals Archive Online (PAO)
    Revue de littérature comparée. 21 (1947) 125 
    Details
    ISSN: 0035-1466
    Topics: Linguistics and Literary Studies
    Notes: Comptes rendus critiques
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0005-1947-021-00-000012
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  • 3
    Electronic Resource
    Electronic Resource
    A simple impregnation technique for thin and semithin enterochromaffin cells in sections (1980)
    Springer
    Histochemistry and cell biology 66 (1980), S. 201-209 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Constant, intense and precise impregnation of enterochromaffin (EC) cells was achieved simply by floating thin or semithin sections of gut mucosa, fixed in osmium tetroxide or in glutaraldehyde with postfixation in osmium, on a silver nitrate or proteinate solution. EC cells alone showed impregnation in the light microscope. In the electron microscope, impregnation affected not only the secretory granules of EC cells but also, although much more faintly, those of other, non-EC cells (D, X, D1, G and other cells). Lysosomes also showed partial or total reactivity. Oxidation reduced but did not entirely suppress EC cell staining and had no effect on non-EC endocrine cell staining. Since the reaction did not occur with glutaraldehyde alone, osmium appeared to be a crucial component of the process. These findings should be borne in mind in applying Thiery's method for vicinal glycol groups to the type of study material used in these experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00494646
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  • 4
    Electronic Resource
    Electronic Resource
    Application of the thiocarbohydrazide method for vicinal glycol group detection to the study of gastric mucosa endocrine cells (1980)
    Springer
    Histochemistry and cell biology 66 (1980), S. 277-284 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The thiocarbohydrazide-silver proteinate (TCH-SP) method was applied to the study of cat, rabbit and mouse gastric mucosa endocrine cells. After 24-h treatment with thiocarbohydrazide (TCH), glycogen was seen in the hyaloplasm of X, D, P, A and O cells but not in EC, EC-like or D1 cells. With flotation times as short as 30 to 40 min glycogen was readily detected in X cells. Secretory granules of EC cells were constantly stained, while those of D1 cells failed to react. In most experiments granules of X, A and O cells showed peripheral “staining”, while in others staining of variable intensity affected the entire granular cross-section in X, D and P cells. With 72-h exposure to TCH, EC and EC-like cells showed particles resembling glycogen, even staining or only peripheral staining of certain EC cell granules. From the results of this and previous studies, EC cell staining is believed to be due wholly or partly, according to exposure times, to the action of silver proteinate, while that of certain non-EC cells is probably a specific indicator of complexed carbohydrates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00495740
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  • 5
    Electronic Resource
    Electronic Resource
    Use of GnRH analogues in ovulation induction for in vitro fertilization: Benefit of a short administration regimen (1987)
    Springer
    Journal of assisted reproduction and genetics 4 (1987), S. 64-65 
    Details
    ISSN: 1573-7330
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01555440
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  • 6
    Electronic Resource
    Electronic Resource
    Composition of human zona pellucida as revealed by SDS-PAGE after silver staining (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 41 (1995), S. 355-359 
    Details
    ISSN: 1040-452X
    Keywords: Human zona pellucida ; Fertilization ; Human oocytes ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The macromolecular composition of zona pellucida (ZP) isolated from human oocytes and embryos was characterized by one- and two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis (1-D- and 2-D-SDS-PAGE) under reducing conditions after silver staining. ZP specimens obtained after in vitro fertilization were removed from pools of heavily fragmented embryos and inseminated oocytes that failed to fertilize. For unfertilized oocytes, two major bands with an apparent molecular weight of, respectively, 96 and 76-54 kDa were observed after 1-D-SDS-PAGE and silver staining. When ZP were isolated from fragmented embryos, the electrophoretic pattern showed a marked attenuation of the 96-kDa band. Silver-stained 2-D-SDS-PAGE analysis of ZP components from unfertilized oocytes revealed the presence of four protein trains: ZP1 (Mr = 92-80 kDa, pl = 4.9-5.9), ZP2 (Mr = 66-58 kDa, pl = 5.0-6.0), ZP3H (high) (Mr = 72-58 kDa, pl = 3.5-5.1), and ZP3L (low) (Mr = 62-54 kDa, pl = 3.5-5.1). The human ZP3 family (ZP3H and ZP3L) showed marked heterogeneity. Fertilization-associated changes were apparent in the electrophoretic pattern. ZP1 (Mr = 92-86 kDa, pl = 5.0-5.8) displayed a dramatic decrease in intensity, and a new component had migrated to a position similar to that of ZP2. This modification may have been responsible for one aspect of the zona reaction, and could have contributed to a zona block to polysperma. © 1995 Wiley-Liss, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080410311
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  • 7
    Electronic Resource
    Electronic Resource
    Quantitative autoradiography, electron microscopy, and granulometry of endocrine cells in the rabbit colon (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 164 (1982), S. 353-361 
    Details
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: A high-resolution autoradiographic study was conducted on 268 thin sections of endocrine cells in the rabbit colon following injection of (3H) Ldopa. Using quantitative autoradiography, silver-proteinate impregnation, granulometry, and statistical analysis of cell populations by the Falck procedure, three cell types were identified-EC, L; and H-as well as a single cell with distinct ultrastructural characteristics. For the first time, a fine quantitative estimation of the handling ability of amine precursor related to the cross-sectional areas of each cell type was obtained, using a Kontron Digiplan image analyzer. All cells studied showed the ability to take up the precursor. Labeling indices were 6.63, 2.15, and 2.14 for EC, L, and H, respectively. These data and silver-proteinate impregnations provide good criteria for differentiating EC from H cells despite morphological similarities. After critical analysis of granule diameters, L cells were considered to be pluripotential in secretory activity.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aja.1001640406
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