In a society where lung and breast cancers are leading causes of cancer death worldwide, early detection of the disease is highly desirable. In a new scientific study, researchers present astonishing new evidence that man's best friend, the dog, may have the capacity to contribute to the process of early cancer detection.

Ants that tend and harvest gardens of fungus have a secret weapon against the parasites that invade their crops: antibiotic-producing bacteria that the insects harbor on their bodies.

New findings that long-overlooked brain cells play an important role in regulating blood flow in the brain call into question one of the basic assumptions underlying today's most sophisticated brain imaging techniques and could open a new frontier when it comes to understanding Alzheimer's disease.

In an unexpected discovery, scientists at Jefferson Medical College have found that a tiny change in a rabies virus protein can turn a "safe" virus extremely deadly. The finding has enabled the researchers to refine a vaccine they previously created against rabies in wildlife, making it safer and more effective.

A dangerous drug-resistant bacterium is becoming more prevalent in many intensive care units, according to an article in the Feb. 1 issue of Clinical Infectious Diseases, now available online.

The knowledge that one disease may prevent the onset of another is not new. For example, the discovery that cowpox vaccines can prevent smallpox dates back to 1798.

A protein that seems to be pivotal in lifting depression has been discovered by a Nobel Laureate researcher funded by the National Institutes of Health's National Institute of Mental Health (NIMH).