In late 2012, French microbiologist Emmanuelle Charpentier approached a handful of American scientists about starting a company, a Crispr company. They included UC Berkeley’s Jennifer Doudna, George Church at Harvard University, and his former postdoc Feng Zhang of the Broad Institute—the brightest stars in the then-tiny field of Crispr research. Back then barely 100 papers had been published on the little-known guided DNA-cutting system. It certainly hadn’t attracted any money.

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