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Bowing to religious and partisan ideologues in 2001, George W. Bush restricted embryonic stem cell research.

There have been six different prime ministers in the UK, Brexit, a global pandemic and three Olympic Games, and women's cricket is now unrecognisable from the days when professionalism was embryonic.

Arhgap36, a protein involved in many aspects of embryonic development, wasn’t previously known to affect skin or hair coloration.

She applied the technique both to mouse neurons grown in a dish and to samples from superthin slices of adult and embryonic mouse brain.

Cells don’t generally need both, so during embryonic development each cell randomly chooses one X to express genes from.