A new and particularly reliable method for marking cells can simplify research into diseases such as myocardial infarction, diabetes or Alzheimer’s and reduce the use of test animals: Scientists from the University of Tübingen have developed a method by which they can target specific cell types in mice and monitor their behavior using positron emission tomography (PET). PET-based cell tracking allows scientists to observe complex life processes in the body without subjecting test animals to invasive methods. {read more here}