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  • 1
    Electronic Resource
    Electronic Resource
    The synaptic activation of neurones of the feline ventrolateral thalamic nucleus: Possible cholinergic mechanisms (1972)
    Springer
    Experimental brain research 15 (1972), S. 472-483 
    Details
    ISSN: 1432-1106
    Keywords: Ventrolateral thalamic nucleus ; Synaptic inputs ; Entopeduncular nucleus ; Cholinergic mechanisms ; Atropine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The responses of individual neurones of nucleus ventrolateralis thalami (VL) have been recorded extracellularly following stimulation of the brachium conjunctivum (BC), nucleus entopeduncularis (EN) and precruciate cortex. In anaesthetized cats stimulation of these structures produced either short latency single spike responses or brief bursts of action potentials with somewhat longer latency: the latter responses could be converted to single spikes by the electrophoretic application of acetylcholine or an excitatory amino acid to the neurone. Atropine attenuated the effect of BC stimulation but did not alter excitations from the cortex or EN. Acetylcholine was found to depress the excitation of VL neurones from EN. Collateral fibres of the EN neurones were shown to innervate neurones in the lateral parts of the centrum medianum — parafascicular complex and in VL. It was concluded that VL neurones receive monosynaptic inputs from cortex, EN and the cerebellar nuclei, but that only-the last may have a significant cholinergic component.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236403
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chloroplast DNA restriction fragment length polymorphism in Sequoia sempervirens D. Don Endl., Pseudotsuga menziesii (Mirb.) Franco, Calocedrus decurrens (Torr.), and Pinus taeda L. (1991)
    Springer
    Theoretical and applied genetics 81 (1991), S. 83-89 
    Details
    ISSN: 1432-2242
    Keywords: cpDNA RFLPs ; Sequoia sempervirens D. Don Endl. ; Pseudotsuga menziesii (Mirb.) Franco ; Calocedrus decurrens (Torr.) Florin ; Pinus taeda L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The extent and type of chloroplast DNA restriction fragment length polymorphism was determined among individual tree samples of coast redwood, Douglas fir, incense-cedar, and loblolly pine. A total of 107 trees was surveyed for three restriction enzymes (BamHI, EcoRI, HindIII) and six chloroplast DNA probes from petunia (P3, P4, P6, P8, P10, S8). The probes comprise 64% of the petunia chloroplast genome. Polymorphisms were detected in all species but loblolly pine. Coast redwood and incense-cedar had a small number of rare variants, whereas Douglas fir had one highly polymorphic region of insertions/deletions in sequences revealed by the P6 probe from petunia. The mutation hotspot is currently being studied by DNA sequence analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226116
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    Paper (German National Licenses)
    Fulltext
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