Updates are available Erratum dated 2017-08-01

Article History

Received: 19 December 2014

Accepted: 24 April 2015

First Online: 15 June 2015

Change Date: 5 July 2017

Change Type: Correction

Change Details: In the version of this Article originally published, the wave velocity reported in the sentence beginning 'In the absence of cell–cell contacts...' was incorrectly calculated and should have read '0.8 ± 0.1 μm s–1'. The wave velocity is calculated by dividing the cell perimeter by the oscillation period, and further dividing this by two as there are two waves travelling around the cell. The number of waves was not taken into account in the originally published version of the Article. This mistake does not affect the main conclusions of the paper, as this sentence only describes a property of the phenomenon identified. This error has been corrected in the online version of the Article.

Competing interests

: The authors declare no competing financial interests.