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  • 1985-1989  (4)
  • 1
    Digitale Medien
    Digitale Medien
    Phagocytosis of myelin sheath fragments by dendrites (1987)
    Springer
    Experimental brain research 66 (1987), S. 517-521 
    Details
    ISSN: 1432-1106
    Schlagwort(e): Phagocytic dendrites ; Myelinophagia ; Spinal cord ; Frog
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In serial ultrathin sections of the frog spinal cord, profiles of dendritic appearance were identified that contained myelin fragment inclusions and received synaptic contacts. In a number of cases it could be established that the inclusions were derived from adjacent myelin sheaths. It is suggested that the phenomenon may refer to a turnover of the myelin sheath in which the detached myelin fragments are eliminated by dendrites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00270684
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  • 2
    Digitale Medien
    Digitale Medien
    Platelet [3H]imipramine binding in autism and schizophrenia (1987)
    Springer
    Psychopharmacology 91 (1987), S. 101-103 
    Details
    ISSN: 1432-2072
    Schlagwort(e): Autism ; Schizophrenia ; Imipramine binding site ; Neuroleptics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract [3H]Imipramine binding to platelet membranes was evaluated in ten autistics, eight schizophrenics and seven normal controls. The schizophrenics and eight out of the ten autistics were maintained on chronic neuroleptic treatment. Diagnosis of autism and schizophrenia was established according to the DSM-III criteria. No significant difference in the maximal binding capacity of [3H]imipramine (B max) andK d values could be found among the three groups. It seems that the imipramine binding site is intact both in autism and schizophrenia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00690935
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  • 3
    Digitale Medien
    Digitale Medien
    No distribution is prime (1985)
    Springer
    Probability theory and related fields 70 (1985), S. 263-269 
    Details
    ISSN: 1432-2064
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Summary Letℱ denote the convolution semigroup of probability distributions on the real line. We prove thatno element of ℱ is prime in the sense that given anℱ one can always find two distributionsG,H∈ℱ such thatF is a convolution factor ofG#x002A;H but neither ofG nor ofH. In contrast,ℱ is known to possess many irreducible elements.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02451431
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  • 4
    Digitale Medien
    Digitale Medien
    Distal dendrites of frog motor neurons: a computer-aided electron microscopic study of cobalt-filled cells (1986)
    Springer
    Journal of neurocytology 15 (1986), S. 303-310 
    Details
    ISSN: 1573-7381
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary With the aid of the cobalt labelling technique, frog spinal cord motor neuron dendrites of the subpial dendritic plexus have been identified in serial electron micrographs. Computer reconstructions of various lengths (2.5–9.8 μm) of dendritic segments showed the contours of these dendrites to be highly irregular, and to present many thorn-like projections 0.4–1.8 μm long. Number, size and distribution of synaptic contacts were also determined. Almost half of the synapses occurred at the origins of the thorns and these synapses had the largest contact areas. Only 8 out of 54 synapses analysed were found on thorns and these were the smallest. For the total length of reconstructed dendrites there was, on average, one synapse per 1.2 μm, while 4.4% of the total dendritic surface was covered with synaptic contacts. The functional significance of these distal dendrites and their capacity to influence the soma membrane potential is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01611433
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