Research from the University of Louisville published today (June 6) in the Proceedings of the National Academy of Sciences indicates the removal of a tiny RNA molecule in mice suppresses carcinogenic tumor formation. The study appears in the journal's Early Edition online at www.pnas.org.

Scientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, have demonstrated why certain immune cells chronically exposed to HIV shut down, and how they can be reactivated.

Using the only microscope of its kind in Australia, medical scientists have been able for the first time to see the inner workings of T-cells, the front-line troops that alert our immune system to go on the defensive against germs and other invaders in our bloodstream.

Scientists have identified a new strain of methicillin-resistant Staphylococcus aureus (MRSA) which occurs both in human and dairy cow populations.