The biotech company Holmes started was once worth $9 billion.
"The technical barrier is now broken," a member of the team that cloned the primates said.
The FDA said the procedure that led to the first "three-parent embryo," violates the regulator's restrictions on genetic engineering. The clampdown could have widespread implications for other advancements in the controversial field of human genetic modification.
Results of the peer-reviewed study are expected to be published soon in a scientific journal.
Say it with us: genetically modified organisms.
Rees explores the opportunities and risks that cutting-edge science presents.
The plan is to create a woolly mammoth-elephant hybrid.