Summary
Ultracytochemical identification of monoamines in the paraventricular organ (PVO) of Xenopus laevis tadpoles was achieved by applying glutaraldehyde-potassium dichromate fixation to the brains. It appears that the amines are concentrated inside elongated or round large granular vesicles within the neurons. The presence of dopamine and, to a lesser extent, of indolamines in neurons of the PVO is discussed.
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The authors gratefully acknowledge the interest and helpful suggestions of Prof. Dr. P. G. W. J. van Oordt. Thanks are also due to Mr. M. C. A. van Pinxteren for assistance in photography.
This work was carried out under the sponsorship of New Science College, Hyderabad, India; financial support was gratefully received through H.E.H.N.'s Trust and by an IBRO-UNESCO fellowship.
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Chacko, T., Peute, J. Ultrastructural and cytochemical localization of the storage sites of monoamines in the paraventricular organ of Xenopus laevis tadpoles. Cell Tissue Res. 151, 417–421 (1974). https://doi.org/10.1007/BF00222988
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DOI: https://doi.org/10.1007/BF00222988