Interpretation Provides information to assist in interpretation of the test results. Creatine kinase MB (CKMB) levels can be detected within 3 to 8 hours of the onset of chest pain, peak within 12 to 24 hours, and usually return to baseline levels within 24 to 48 hours.
Elusive Whales Set New Record for Depth and Length of Dives Among Mammals. A new study of elusive Cuvier's beaked whales shows they can dive to nearly 10,000 feet (3,000 meters). View Images. A Cuvier's beaked whale swims just under the surface of the ocean near the GalÃ¡pagos Islands.
Unlike humans, many whales can go on hour-long dives without needing to breathe. But no one has been sure how they did it. Now, new research shows it all comes down to a specially adapted oxygen-binding protein in the animals' muscle tissues â a finding that could someday prove valuable in medicine. Advertisement.