Visualization of the Hox gene Scr
transcription in a live embryo. Nuclei are shown in blue (tagged histone), and
transcription foci appear in white. Transcription can be detected just prior to
the onset of gastrulation – the complex set of tissue movements that is
observed towards the end of the movie. Published in Science, Feb.
3, 2022. Vol 375, Issue 6580, pp. 566-570, DOI: 10.1126/science.abi7178