Science Daily  July 27, 2021 Working under a project co-supported by the US Army, an international team of researchers (Germany, UK, USA – Purdue University, UT Dallas, China) has demonstrated that cryptochrome 4, a protein in birds’ retinas is sensitive to magnetic fields. They identified the molecular mechanism underlying this sensitivity. They extracted the genetic code for cryptochrome 4 and produced the photoactive protein in large quantities using bacterial cell cultures. They used a wide range of magnetic resonance and novel optical spectroscopy techniques to demonstrate its pronounced sensitivity to magnetic fields due to electron transfer reactions triggered by absorption […]