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More than 1000 secretory organelles (trichocysts) are docked at the plasma membrane of Paramecium cells. After stimulation, the… Expand We present the first evidence that secretory organelle docking at the cell membrane can be reversed in vivo. In nondischarge (nd… Expand To characterize the microsources of bioluminescent activity in the dinoflagellate Gonyaulax polyedra, an immunogold labeling… Expand The trichocysts of Paramecium tetraurelia constitute a favorable system for studying secretory process because of the numerous… Expand Previous studies on exocytosis in Paramecium using mutants affecting trichocyst extrusion permitted us to analyze the assembly… Expand Using a series of mutants of Paramecium tetraurelia, we demonstrate, for the first time, changes in the internal structure of the… Expand A specific exocytic process, the discharge of spindle trichocysts of paramecium caudatum was examined by means of the electron… Expand The outer membrane complex of Paramecium was investigated by ultrathin-sectioning techniques and by freeze-etching of unfixed… Expand The structure of undischarged and discharged trichocysts has been examined in Paramecium caudatum , and their light-microscopic… Expand Trichocysts of Paramecium aurelia were isolated in the extruded or fired form. Electron microscopy reveals a banding pattern… Expand