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On the histochemical differences of aldehyd-fuchsin positive material in the fibres of the hypothalamo-hypophyseal tract of Rana temporaria

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Summary

Using a modified Alcian blue/Alcian yellow method, differences in stainability in the fibres of the preoptic-hypophyseal tract of Rana temporaria were observed. Near the preoptic nucleus most of the fibres stained yellow, in the tract the fibres stained lightgreen or showed green inclusions on a yellow background, whereas at the fibre-endings a colour switch to blue-green was found. This colour switch was the most pronounced in the neural lobe, where the neurosecretion stained blue-green, whereas in the fibre-endings in the outer zone of the median eminence a colour switch to green was noticed.

The results can best be explained with the assumption that a modification or transformation of the neurosecretion occurs during its transport from the preoptic nucleus to the fibre-endings.

Literature related to this hypothesis is discussed.

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  1. Zoölogisch Laboratorium der Rijksuniversiteit te Utrecht, Netherlands

    J. Peute & J. C. van de Kamer

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  1. J. Peute
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  2. J. C. van de Kamer
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Peute, J., van de Kamer, J.C. On the histochemical differences of aldehyd-fuchsin positive material in the fibres of the hypothalamo-hypophyseal tract of Rana temporaria . Z. Zellforsch. 83, 441–448 (1967). https://doi.org/10.1007/BF00319318

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  • DOI: https://doi.org/10.1007/BF00319318

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