Dibucaine-induced synchronous mucocyst secretion in Tetrahymena

Birgit Satir

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Synchronous secretion of all available mature mucocysts was induced in late log phase cultures of Tetrahymena thermophilia (B III) by the local anaesthetic dibucaine. No assembled fusion rosettes were seen within the plasma membrane after release until 2-3 hrs of regrowth, thus proving that the rosettes are not permanent sites within the plasma membrane but have to be reassembled each time for a new fusion event to occur. Concomitant with the reappearance of assembled fusion rosettes, the cell cytoplasm fills up with precursors of new mucocysts thus linking the two events together.

Original languageEnglish (US)
Pages (from-to)69-73
Number of pages5
JournalCell Biology International Reports
Issue number1
StatePublished - Jan 1977

ASJC Scopus subject areas

  • Cell Biology


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