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  • Polymer and Materials Science  (2)
  • Acetylcholinesterase histochemistry  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Origin of high acetylcholinesterase activity in the mouse superior colliculus (1988)
    Springer
    Experimental brain research 72 (1988), S. 335-346 
    Details
    ISSN: 1432-1106
    Keywords: Superior colliculus ; Acetylcholinesterase histochemistry ; Cholinergic ; Tegmental pedunculopontine nucleus ; Laterodorsal tegmental nucleus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The acetylcholinesterase activity in the colliculus mainly occurs in two layers and is arranged as a lattice in the intermediate grey layer and as a continuous sheet in the superficial grey layer. Under-cutting lesions abolish the lattice in the intermediate grey layer but leave the superficial sheet of activity intact. By contrast the injection of kainic acid into the colliculus leaves the intermediate layer lattice intact while causing a local reduction in the superficial layer. Injections of the retrograde tracer Fluoro-Gold into the colliculus labels cells in the pedunculopontine and laterodorsal tegmental nuclei that contain acetylcholinesterase. Cells in the parabigeminal nucleus are also labelled but these cells contain low levels of cholinesterase. Thus, it is concluded that the lattice in the intermediate layers is mainly dependent on afferents from the laterodorsal tegmental and pedunculopontine nuclei while the sheet in the superficial layers is mainly dependent on intrinsic cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00250255
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  • 2
    Electronic Resource
    Electronic Resource
    Polymerization of tetrahydrofuran: A radiochemical study of the initiation mechanism (1969)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 7 (1969), S. 1489-1496 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 14C-tagged triphenylmethyl hexachloroantimonate was used to initiate the polymerization of THF. An activity count on the polymers indicated no incorporation of initiator fragments into the macromolecule. On ascertaining the fate of the tagged trityl fragment it was found that the activity resided in the triphenylmethane isolated from the methanol supernatant. This indicates that at least one sequence of the initiation reaction in this polymerization involves hydride ion abstraction.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1969.150070612
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  • 3
    Electronic Resource
    Electronic Resource
    Cationic polymerization of α-methylstyrene oxide (1970)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 8 (1970), S. 577-582 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of α-Methyl Styrene Oxide initiated by trityl hexachloroantimonate is reported upon. Data is presented on side reactions, percent yield and molecular weight of polymer produced in the polymerization.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1970.150080301
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    Paper (German National Licenses)
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