Differentiation of human pluripotent stem cells (hPSC) mimics aspects of embryonic developmentin vitrobut is poorly understood. Here, the authors identify bulk cell density as a key parameter directing transition from pluripotency to primitive streak-like priming in hPSCs via secreted LEFTY/CERBERUS.
- Henning Kempf
- Ruth Olmer
- Robert Zweigerdt
