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  • 1990-1994  (2)
  • 1960-1964
  • 1955-1959
  • Arrector pili muscle  (1)
  • Hydrochloric acid and chloride media  (1)
  • 1
    Electronic Resource
    Electronic Resource
    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
    Keywords: Merkel cell ; Bulge ; Arrector pili muscle ; Nerve plexus ; Skin development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00371594
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chromatography of inorganic ions on diethyl-(2-hydroxy-propyl)aminoethyl cellulose layers in hydrochloric acid and in HCl-ammonium chloride media (1991)
    Springer
    Chromatographia 31 (1991), S. 60-62 
    Details
    ISSN: 1612-1112
    Keywords: Thin-layer chromatography ; Diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose ; Hydrochloric acid and chloride media ; Inorganic ions ; Re(VII)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Thin-layer chromatographic behavior of 49 inorganic ions has been systematically studied on diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose, a strongly basic anion exchanger, in aqueous hydrochloric acid and in acid-ammonium chloride media (0.01 to 1.0 mol dm−3). Aspects of the adsorption behavior of the ions on the cellulose are compared with those on other anion exchangers in the same eluent system. Feasibilities of separation of multicomponent mixtures are proposed on QAE-cellulose in both media. In particular, the selective separation of Re(VII) from many other ions can be accomplished on these systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02290497
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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