1.   Henry Harlow and his colleagues made the discovery after analysing muscle biopsies from sedated bears at the start and end of hibernation.

2.   And five also had mild, non-specific abnormalities on muscle biopsies.

3.   Current diagnostic procedures are difficult and costly and may require confirmation with a painful muscle biopsy.

4.   Muscle function will be tested before, during and after the flight, and muscle biopsy will reveal cellular changes that occur during the flight.

5.   They underwent a sophisticated battery of tests, including muscle biopsies, nerve conduction studies and electromyograms, or EMGs.

6.   But his trainers noted a deterioration in his performance tests and ordered a muscle biopsy from which they diagnosed the disease.

7.   He said his trainers, knowing he was training properly and not overweight, ordered a muscle biopsy from which the disease was diagnosed.