Summary
In the neurohypophysis of fetal and newborn rats the majority of “synaptic” vesicles originate from dilatations of neurotubuli. Moreover, pinocytotic invaginations give rise to “synaptic” vesicles. Evaginations of elementary granule membranes, as described by Herlant (1967), are seldom to be found and do not seem to play an important role in the formation of “synaptic” vesicles. The occurrence of vesicles within elementary granules was not observed.
Zusammenfassung
In der Neurohypophyse fetaler und neugeborener Ratten entsteht die Mehrzahl der „synaptischen“ Bläschen aus Erweiterungen der Neurotubuli. Ferner können pinocytotische Bläschen als „synaptische“ Vesikel imponieren. Die Bläschenbildung aus Membranen von Elementargranula (vgl. Herlant, 1967) tritt dagegen in den Hintergrund. Ein Auftreten von Vesikeln im Innern von Elementargranula wurde nicht beobachtet.
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Vollrath, L. Über die Herkunft „synaptischer“ Bläschen in neurosekretorischen Axonen. Z. Zellforsch. 99, 146–152 (1969). https://doi.org/10.1007/BF00338805
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DOI: https://doi.org/10.1007/BF00338805