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  • 2000-2004  (2)
  • 1990-1994  (1)
  • 1960-1964
  • 1955-1959
  • Binder of Rho GTPase  (1)
  • Bulge  (1)
  • Dinitrile solvents  (1)
Datenquelle
Materialart
Erscheinungszeitraum
  • 2000-2004  (2)
  • 1990-1994  (1)
  • 1960-1964
  • 1955-1959
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    A high concentration of Merkel cells in the bulge prior to the attachment of the arrector pili muscle and the formation of the perifollicular nerve plexus in human fetal skin (1993)
    Springer
    Archives of dermatological research 285 (1993), S. 261-268 
    Details
    ISSN: 1432-069X
    Schlagwort(e): Merkel cell ; Bulge ; Arrector pili muscle ; Nerve plexus ; Skin development
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The distribution of Merkel cells in human fetal hair follicles was studied using whole mounts of separated epidermis with attached hair follicles. The technique had the advantage of enabling the elucidation of the spatial relationships of Merkel cells with other cells in the skin. In a 16-week-old fetus the hair anlagen had formed one or two epithelial swellings of variable size. In a 17-week-old fetus sebaceous glands and the bulge of the hair follicle were recognizable and immunoreactive Merkel cells were present in the bulge and surrounding the acrotrichium (intraepidermal follicular canal). In a 20-week-old fetus the sebaceous gland and bulge were well formed and immunoreactive Merkel cells were concentrated in the bulge and infundibulum. In vertical sections of a 20-week-old fetus immunoreactive Merkel cells were also situated in the vicinity of the bulge. Arrector pili muscles were first observable in a 24-week-old fetus being weakly stained with anti-desmin antibody. In a 24-week-old fetus, nerves were also stained within the arrector pili muscles with S-100 protein antibody. In the presumptive arrector pili muscle immunoreactivity for S-100 protein developed before or at the same time as immunoreactivity for desmin. Merkel cells or their products in the bulge may serve as attractants for the growing arrector pili muscle which contain peripheral nerves. Following our report that dermal Merkel cells influence the formation of the dermal nerve plexus, perifollicular Merkel cells near the bulge may also play an inductive and growth-stimulative role for the perifollicular nerve plexus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00371594
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    A segment concept in the dissolution of stereoregular isotactic polyacrylonitrile into three dinitrile solvents, CN-(CH2) n -CN (n = 1, 2, and 3), at elevated temperatures (2000)
    Springer
    Colloid & polymer science 278 (2000), S. 352-357 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Isotactic polyacrylonitrile ; High-temperature dissolution ; Dinitrile solvents ; Segment mobility
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract The dependence of the dissolution temperature (T sol) of isotactic polyacrylonitrile (PAN) on tacticity was studied for three dinitrile solvents. A linear relationship was obtained in the inverse plots of the tacticity dependence of the T sol of PAN. A phenomenological analogy between the tacticity dependence of the T sol of isotactic PAN and the molecular-weight dependence of the glass-transition temperature of amorphous polystyrene is discussed from a thermodynamic point of view. The linear relationships in both phenomena are explained in terms of a common mechanism: a breakdown of thermodynamic competition, enthalpy, and entropy through the segment mobility. The significance of segment concept and molecular mobility at elevated temperatures are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050524
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Sequence analysis, gene expression, and chromosomal assignment of mouse Borg4 gene and its human orthologue (2000)
    Springer
    Journal of human genetics 45 (2000), S. 374-377 
    Details
    ISSN: 1435-232X
    Schlagwort(e): Key words Cell motility ; Binder of Rho GTPase ; CDC42 TC10 ; Borg4 ; Full-length cDNA ; Fluorescence in situ hybridization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract The Borg (binder of Rho GTPases) family proteins interact with CDC42 and TC10 in a guanosine triphosphate (GTP)-dependent manner. We have isolated a full-length cDNA of the mouse Borg4 gene, which is a member of this family. Sequence analysis revealed that this gene encoded a putative 349-amino acid protein. By reverse transcription — coupled polymerase chain reaction (RT-PCR) analysis, we observed that Borg4 was expressed ubiquitously in adult tissues. Additionally, we determined the entire cDNA sequence of the putative human Borg4 orthologue. By fluorescence in situ hybridization, mouse Borg4 and the putative human orthologue have been assigned to mouse chromosome 11E and human chromosome 17q24–25, which has been described as syntenic to the mouse region.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100380070012
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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