labrats Subjects of much nutritional research Running scientific subjects Research subjects Obsessive researchers Much-studied critters Maze-running rodents: 2 wds Maze-running rodents Frequent experiment subjects Experimental runners Experiment runners? A-mazing animals They may be given test runs Test group? Test subjects, so to speak Ones caught in a maze? Runners of experiments Maze runners Rodents in research A-mazing creatures? Upper body muscles, for short