5 August 2022 A rod-like structure with green and magenta segments representing cellular markers.

Making patterns visible

Science How do gene expression patterns result in the generation of different cell types? Scientists at EMBL Heidelberg used the zebrafish notochord to find out.



23 February 2022 A male scientist in a white shirt stands at a walkway railing.

Welcome: Michael Dorrity

Lab Matters Michael Dorrity, one of EMBL’s newest group leaders, is studying how the environment influences early life stages in zebrafish.



4 August 2020 A long string of cells - red in the centre, yellow at the border.

Fish close-up

Picture of the week This group of cells represents an interesting example of organ formation where cells simultaneously move and change their shapes in a highly coordinated manner.



15 May 2020 Cell division

Tracing the origins of cells

Science Researchers from the Sharpe group at EMBL Barcelona have published a method to track the developmental history of a cell using the gene editing tool CRISPR–Cas9, but without the need to create transgenic organisms.



25 February 2020

Accidental beauty

Picture of the week In the Trivedi Group at EMBL Barcelona, Krisztina Arató and Jia Le Lim study the early development of zebrafish embryos.



3 December 2019 Black and blue hexagon shapes with some yellow and red hot spots

Skin mosaic

Picture of the week This beautiful mosaic of mostly hexagonal cells is the outer skin layer of a zebrafish larva as seen under a microscope. Each skin cell exhibits a unique pattern of actin ridges. Actin is a family of globular multifunctional proteins found in almost all eukaryotic cells. Actin forms microfilaments,…



8 October 2019

The zebrafish earned its stripes

Picture of the week Despite missing the characteristic stripes one would expect from a zebra – or a zebrafish – the fractals in this Picture of the Week show a zebrafish; or at least some cells in a zebrafish embryo, a few hours after fertilisation. Zebrafish are not only popular aquarium fish, they are also an…



25 September 2013

Without a trace

Science Migrating cells, it seems, cover their tracks not for fear of being followed, but to keep moving forward. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have now shown that cells in a zebrafish embryo determine which direction they move in by effectively…



4 July 2010 The Fly Digital Embryo at different developmental stages, with cell nuclei coloured according to how fast they were moving (from blue for the slowest to orange for the fastest). The fruit fly embryo is magnified around 250 times. IMAGE: Philipp Keller

Digital Embryo gains wings

Science The scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, who ‘fathered’ the Digital Embryo have now given it wings, creating the Fly Digital Embryo. In work published today in Nature Methods, they were able to capture fruit fly development on film, and were the…



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