Using host-specific parasites isolated on individual pigeon 'islands,' the scientists showed that descendants of a single population of feather lice adapted rapidly in response to preening. They found ...

Some of the most fundamental questions in evolution remain unanswered, such as when and how extremely diverse groups of animals - for example reptiles - first evolved. For 75 years, adaptive ...

For patients with recurrent retroperitoneal sarcomas that cannot be treated surgically, treatment choices are limited. These tumors can grow quite large in the abdomen adjacent to vital organs or ...

LIMITATION of vision to a narrow range of wavelengths of radiation is manifestly related to the absorption of radiant energy by protein and water. The importance of light as a directive agent is ...

In January, Cleveland-based University Hospitals Seidman Cancer Center became one of the first facilities in the U.S. to offer adaptive radiotherapy. At the time, Daniel Spratt, MD, chair of radiation ...