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  • 1990-1994  (2)
  • Cell cycle Immunohistochemistry  (1)
  • Photosystem II
  • Polymer emulsion
  • 1
    Electronic Resource
    Electronic Resource
    Preparation of micron-size monodisperse polymer microspheres having crosslinked structures and vinyl groups (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 217-221 
    Details
    ISSN: 1435-1536
    Keywords: Polymer emulsion ; microsphere ; crosslink ; vinyl group ; dispersion polymerization ; seeded polymerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Micron-size monodisperse polymer microspheres having crosslinked structures therein and vinyl groups thereon were prepared by seeded copolymerization of styrene and divinylbenzene with 2,2′-azobisisobutyronitrile as initiator in ethanolwater medium in the presence of 2.1-μm monodisperse polystyrene seed particles produced by dispersion polymerization. The optimum conditions of the seeded copolymerization for producing the microspheres with good monodispersity and colloidal stability were determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00665494
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Assessment of bromodeoxyuridine-labeled S-phase cells in experimentally induced precancerous lesions in the rat's tongue (1994)
    Springer
    European archives of oto-rhino-laryngology and head & neck 251 (1994), S. 160-164 
    Details
    ISSN: 1434-4726
    Keywords: Tongue ; Precancerous conditions ; Cell cycle Immunohistochemistry ; Bromodeoxyuridine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Precancerous lesions and early invasive carcinomas were produced in the tongues of rats by oral administration of 0.001% 4-nitroquinoline 1-oxide in drinking water. The distribution and densities of S-phase cells were then studied in an attempt to clarify the mechanism of carcinogenesis from the viewpoint of cell cycle. Bromodeoxyuridine (BrdU)-labeled S-phase cells were demonstrated by an indirect peroxidase method, using anti-BrdU monoclonal antibody, and their percentage was determined as the labeling index (LI). The average BrdU LI was significantly higher in the precancerous lesions than in the normal epithelium. There was a wide range of LI found in cells showing such changes as hyperplasia, hyperparakeratosis, dysplasia and papilloma, but the differences among them were not significant. These findings also showed that there could be considerable differences in proliferative activity among lesions of the same grade, while the difference in histology did not mean a difference in proliferative activity. Additionally, many BrdU-labeled cells were seen in a few layers over the basement membranes of noncancerous lesions immediately adjacent to early invasive carcinoma, suggesting that these layers had a higher possibility for advancing to early invasive carcinoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00181828
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    Paper (German National Licenses)
    Fulltext
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