Summary
Freeze-fracture of granular cells of toad urinary bladder (Bufo marinus) reveals the presence, hitherto undescribed, of intramembranous particle aggregates in intracytoplasmic structures (tubules, vacuoles and vesicles) both in resting and vasopressin-stimulated epithelia.
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Since submission of this paper we learned that intracytoplasmic particle aggregates were also found by J. B. Wade (to be published in the J. Memb. Biology).
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This work was supported by grants No. 3.553.75, 3.120.77 and 3.1300.73 from the Swiss National Science Foundation.
The authors are indebted to Mrs Marthe Sidler-Ansermet, Miss Jacqueline Rial and Mr Michel Bernard for valuable technical assistance.
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Humbert, F., Montesano, R., Grosso, A. et al. Particle aggregates in plasma and intracellular membranes of toad bladder (granular cell). Experientia 33, 1364–1367 (1977). https://doi.org/10.1007/BF01920184
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DOI: https://doi.org/10.1007/BF01920184