Abstract
CAN a cell which has already entered on division go on to divide even when the presumptive or visible fission line or furrow is removed? This question can be answered conclusively for the large ciliate Stentor coeruleus, which is remarkably suitable for micro-surgical operations1. One might expect that the ciliate would then be uable to divide. Uhlig2 reported this finding after deleting the fission line from dividing S. coeruleus, and when Suzuki3 excised mid-cell disks bearing the visible fission line from dividing Blepharisma, these ciliates also failed to divide, although removal of the presumptive fission line did not prevent division, as I have confirmed in Stentor.
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References
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TARTAR, V. Cell Division after Removal of the Division Line in Stentor. Nature 216, 695–697 (1967). https://doi.org/10.1038/216695a0
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DOI: https://doi.org/10.1038/216695a0
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