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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

    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)

  3. No Access

    Article

    The element distribution in ultrathin cryosections of cultivated fibroblast cells

    A preparation method for measurements of the intracellular distribution of elements in tissue culture cells is described which is based on cryofixation, cryoultramicrotomy, cryotransfer and X-ray microanalysis...

    K. Zierold, D. Schäfer, F. Pietruschka in Histochemistry (1984)