Summary
A method for preparation of biological specimens for electron probe X-ray microanalysis is described, that aims at retaining the original elemental distribution within the tissue at the cellular level. The tissue is without any chemical fixation, quench-frozen, and 16-μm sections are prepared with a conventional cryomicrotome, transferred to a carbon specimen holder and freeze-dried.
Adjacent serial sections, collected on glass slides and stained with various histological procedures, are used to correlate the data obtained by X-ray microanalysis with other histochemical information on the same cell or tissue.
To demonstrate the possibilities of the method, sections of the earthworm Lumbricus terrestris were analyzed. In the chloragogenous cells, high concentrations of Ca, Zn and P were found. The inner and outer muscle layer show slightly different properties, both with regard to elemental composition and to myofibrillar ATPase activity.
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Wróblewski, R., Roomans, G.M., Ruusa, J. et al. Elemental analysis of histochemically defined cells in the earthworm Lumbricus terrestris . Histochemistry 61, 167–176 (1979). https://doi.org/10.1007/BF00496529
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DOI: https://doi.org/10.1007/BF00496529