German authority halts primate work
Andreas Kreiter plans to appeal the controversial decision to stop his studies of cognition in macaques. J. Sarbach/AP
Andreas Kreiter at the University of Bremen uses 24 macaques to study cognitive processes in the mammalian brain. Germany's largest animal-protection group, the Animal Welfare Association, has for years campaigned against the experiments, claiming that they are intolerably painful and have no short-term therapeutic use.