When a vertebrate encounters substances that are capable of causing it harm, a protective system known as the "immune system" comes into play. This system is a network of many different organs that work together to recognize foreign substances and...

When a vertebrate encounters substances that are capable of causing it harm, a protective system known as the immune system comes into play. This system is a network of many different organs that work together to recognize foreign substances and...

see immune...

T cells belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity. They can be distinguished from other lymphocyte types, such as B cells and NK cells by the presence of a special receptor on their...

A lawsuit alleging that AT&T Inc.'s cell phone customers received inferior service after the company's wireless division was sold to Cingular Wireless can proceed as a class action, a federal appeals court ruled Friday.At issue was a clause in old Cingular contracts that forced customers...

In a disappointing setback, a promising experimental AIDS vaccine failed to work in a large international test, leading the developer to halt the study.Merck & Co. said Friday that it is ending enrollment and vaccination of volunteers in the study, which was partly funded by...

Two University of Oklahoma scientists are starting research that they hope will someday lead to the development of a vaccine to combat the HIV virus, which causes AIDS.The research to be performed by Mark Lang, an assistant professor of microbiology and immunology at the OU...

Surviving major trauma _ a car crash, gunshot wounds, burns _ isn't just a matter of fixing the obvious injuries. About a week into the healing, many patients' organs suddenly fail, as doctors watch helplessly. They can't predict who will go into...