With a so-called in-situ labelling, the cells from which the structures of the back develop are darkly marked in these zebrafish embryos. If the maternal proteins Sox19b and Pou5f3 are missing, as in the right embryo, the developmental programs no longer run correctly and the pattern changes. (IMAGE)

University of Freiburg

With a so-called in-situ labelling, the cells from which the structures of the back develop are darkly marked in these zebrafish embryos. If the maternal proteins Sox19b and Pou5f3 are missing, as in the right embryo, the developmental programs no longer run correctly and the pattern changes.

Caption

With a so-called in-situ labelling, the cells from which the structures of the back develop are darkly marked in these zebrafish embryos. If the maternal proteins Sox19b and Pou5f3 are missing, as in the right embryo, the developmental programs no longer run correctly and the pattern changes.

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Daria Onichtchouk/ University of Freiburg /CIBSS

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