Geneticist defends his groundbreaking technique

Chinese geneticist Han Chunyu defended the authenticity of his gene-editing technique after the head of a genetics lab in Australia said the lab was unable to replicate it.

Han's paper describing his research findings on a new gene-editing technology called NgAgo was published online in early May by Nature Biotechnology, a monthly scientific journal of Nature Publishing Group. It drew international attention immediately.

Just three months later, some peer scientists began to question the research's viability, largely because they have not been able to replicate the results so far.