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Studies on Ca2+-accumulating vesicles in oocytes of the snail Helix aspersa

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Summary

Ultrastructural, cytochemical and autoradiographic techniques were used to study the functional significance of Ca2+-accumulating vesicles in Helix aspersa oocytes. The organic material of these vesicles is capable of adsorbing calcium ions, thus removing them from the cytosol and forming osmotically inactive complexes that are concentrated in the core. Ca2+-accumulating vesicles likely act as subcellular detoxifying compartments that sequestrate excess cytosolic Ca2+ (and plausibly other metal cations) to maintain physiologically adequate ionic concentrations.

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Correspondence to A. Medina.

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Medina, A., Griffond, B. & Sánchez-Aguayo, I. Studies on Ca2+-accumulating vesicles in oocytes of the snail Helix aspersa . Cell Tissue Res. 257, 597–601 (1989). https://doi.org/10.1007/BF00221470

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Key words

  • Calcium, localization
  • Oocytes
  • Helix aspersa (Mollusca)