The European Union says no thanks.

One lab finds that a similar method produces large genetic deletions when performed in mouse embryos.

The gene-editing technology is already in trials for some rare conditions, with more human testing on the horizon.

The European Court of Justice has decided that organisms made with precision techniques such as CRISPR will be subject to the same rules as transgenic plants or animals.

Phages that die during bacterial invasion help other viruses defeat the microbes’ immune responses.

The DNA-cutting enzyme used in the technique is not as precisely targeted as scientists had thought, and investors take notice.

Brief electroporation appears to make T cells more receptive to new genetic material, which could speed the development of immunotherapies.

Researchers plan to turn cancer cells into defectors, engineering them to kill the tumors from whence they came, and have tested the approach in mice.

It’s the first demonstration of the technology in mammals.