Recent experiments and simulations are starting to answer some fundamental questions about how life came to be.
Image credit: Shutterstock/Radoslaw Lecyk.
Edited by Napoleone Ferrara, University of California, San Diego, La Jolla, CA, and approved May 19, 2015 (received for review April 30, 2015)
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BMP9 and BMP10 in ductus arteriosus closure
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