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About the Cover
Cover:
Serial confocal sections through a salivary gland of the blowfly Calliphora vicina. The gland was stained with the F-actin-probe OregonGreen-phalloidin (green colour) to reveal the organization of the plasma membrane and with the DNA stain DAPI (blue colour) to localize the nuclei. The apical membrane of the secretory cells is involuted deeply into the epithelium to form a branching system of canaliculi that embrace the nuclei. A vacuolar H+-ATPase in the apical membrane is stimulated by the hormone serotonin and provides the primary driving force for fluid secretion (see article by Zimmermann, Dames, Walz and Baumann, pp. 1867-1876).
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