Kamen P. Simeonov

A DNA Typewriter records the cell lineage history of a mouse, from zygote to late organogenesis

Mammalian biology unfolds over time, within tissues and organs opaque to our eyes and instruments. We applied DNA Typewriter, a sequential molecular recorder, to record the cell lineage of a mouse over nearly two weeks of development. From one embryo, we reconstruct a time-calibr...