![A long string of cells - red in the centre, yellow at the border.](https://www.embl.org/news/wp-content/uploads/2020/07/organ_formation_embryo-Hartmann-wordpress-300x180.jpg)
Fish close-up
Picture of the week, Science & Technology This group of cells represents an interesting example of organ formation where cells simultaneously move and change their shapes in a highly coordinated manner.
2020
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