Movie 17.

Prolonged convergent extension at the posterior neural plate of Shroom3 morphant embryos. Time lapse recording showing a zoomed region (posterior neural plate) of a Shroom3 morphant neural plate from Movie 16. This time lapse recording starts from the time-point during which neural tube closure is normally completed in control embryos. Convergent extension continues at the posterior neural plate of Shroom3 morphant at time points when convergent extension does not take place in control embryos. Single cell tracks showing the collective cell intercalative behaviour (left) and an example of a T1 transition (right). Time interval = 3min.