How an ultra-sensitive on-off switch helps axolotls regrow limbs

It's one of the mysteries of nature: How does the axolotl, a small salamander, boast a superhero-like ability to regrow nearly any part of its body? For years, scientists have studied the amazing regenerative properties of ...

Building human muscle genes in the DNA of baker's yeast

Biotechnologist Pascale Daran-Lapujade and her group at Delft University of Technology managed to build human muscle genes in the DNA of baker's yeast. This is the first time researchers have successfully placed such a vital ...

Researchers generate human-monkey chimeric embryos

Investigators in China and the United States have injected human stem cells into primate embryos and were able to grow chimeric embryos for a significant period of time—up to 20 days. The research, despite its ethical concerns, ...

A new way to control microbial metabolism

Microbes can be engineered to produce a variety of useful compounds, including plastics, biofuels, and pharmaceuticals. However, in many cases, these products compete with the metabolic pathways that the cells need to fuel ...

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