September 1, 202113 min read, 2692 words
Published: September 1, 2021 | 13 min read, 2692 words
Researchers are now permitted to grow human embryos in the lab for longer than 14 days. Here’s what they could learn. It was day 13 in a set of experiments in Ali Brivanlou’s laboratory and he had an agonizing task ahead. His team of developmental biologists had thawed dozens of...