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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 162 (1969), S. 306-308 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Zur Prüfung der Fräge, ob der Blutkreislauf bei der Bestimmung der Asymmetrie der Nuclei habenulae des Zwischenhirns eine Rolle spielt, wurden Larven vonTriturus alpestris ohne Blutkreislauf durch Entfernung der Herzanlage hergestellt. Die Nuclei habenulae entwickelten auch ohne Kreislauf ihre normale Asymmetrie. Isolate aus dem Kopfbezirk der Neurula vonTriturus alpestris, die aus cephalem Ekto und Mesoderm bestanden und manchmal auch vorderes Entoderm enthielten, entwickelten in günstigen Fallen an ihrem Gehirn die Nuclei habenulae. Diese besaßen trotz Abwesenheit von Blutkreislauf und der anderen asymmetrischen Organe die normale Asymmetrie.
    Notes: Summary The problem whether the blood circulation influences or determines the asymmetry of Nuclei habenulae was tested by removing the heart-anlage of the embryo ofTriturus alpestris. The resulting larvae without any blood circulation developed their normal asymmetry of habenulae. Isolates from the head region of neurulae ofTriturus alpestris, consisting of cephalic ecto and mesoderm, sometimes also of entoderm, under favorable conditions could develop brains with Nuclei habenulae. These were normal, asymmetric in spite of missing the blood circulation and other asymmetrical organs.
    Type of Medium: Electronic Resource
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