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6 Result(s)

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  1. No Access

    Article

    Stellate cells in the Malpighian tubules of Drosophila hydei and D. melanogaster larvae (Insecta, Diptera)

     The Malpighian tubules of Drosophila hydei and D. melanogaster larvae are composed of two types of cell, principal cells and stellate cells. In the anterior larval Malpighian tubules approximately 26% (D. hydei)...

    Armin Wessing, K. Zierold, Annelies Polenz in Zoomorphology (1999)

  2. No Access

    Article

    Effects of bafilomycin A1 and amiloride on the apical potassium and proton gradients in Drosophila Malpighian tubules studied by X-ray microanalysis and microelectrode measurements

    The intracellular distribution of potassium in Malpighian tubules from Drosophila larva was measured by electron probe X-ray microanalysis of freeze-dried cryosections. Application of amiloride alone to the haemo...

    A. Wessing, G. Bertram, K. Zierold in Journal of Comparative Physiology B (1993)

  3. No Access

    Article

    The spatial distribution of cations in nematocytes of Hydra vulgaris

    The spatial distribution of cations was assayed qualitatively and quantitatively in tentacular nematocytes of Hydra vulgaris in a scanning transmission electron microscope by means of x-ray microanalysis performe...

    I. Gerke, K. Zierold, J. Weber, P. Tardent in Hydrobiologia (1991)

  4. No Access

    Chapter and Conference Paper

    The spatial distribution of cations in nematocytes of Hydra vulgaris

    The spatial distribution of cations was assayed qualitatively and quantitatively in tentacular nematocytes of Hydra vulgaris in a scanning transmission electron microscope by means of x-ray microanalysis performe...

    I. Gerke, K. Zierold, J. Weber, P. Tardent in Coelenterate Biology: Recent Research on C… (1991)

  5. No Access

    Chapter and Conference Paper

    Electron Probe X-Ray Microanalysis in the Silkmoth Antenna — Problems with Quantification in Ultrathin Cryosections

    The antenna of the male silkmoth has been a model system for olfactory physiology since the time when its response to the female sex pheromone could be recorded electrophysiologically (Schneider, 1957, 1984). ...

    R. A. Steinbrecht, K. Zierold in Electron Probe Microanalysis (1989)

  6. No Access

    Article

    Comparative measurements of potassium and chloride with ion-sensitive microelectrodes and x-ray microanalysis in cultured skeletal muscle fibers

    Data of the intracellular electrolyte concentration of potassium and chloride in cultured muscle cells measured by x-ray analysis were compared by using the different activity coefficients with intracellular p...

    H. Acker, F. Pietruschka, K. Zierold in In Vitro Cellular & Developmental Biology (1985)