A microtubule meshwork associated with gametic pronucleus transfer across a cell-cell junction

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Science  14 Oct 1983:
Vol. 222, Issue 4620, pp. 181-184
DOI: 10.1126/science.6623070


In conjugating Tetrahymena, a cellular assembly composed of a microtubule meshwork appears to be required for the transfer of gametic pronuclei across the junction that separates the conjugating cells. This assembly is suggestive of a gametogenic cell division in ancient predecessors of ciliates, with Tetrahymena retaining only the associated nuclear division and export.