Researchers at the University of Texas Southwestern Medical Center have discovered a new drug that could help in vaccine development. It activates the innate immune system in a novel way, UT Southwestern said in a statement. "The drug we made appears safe, and boosts immunity in mice. Therefore, the drug, which is straightforward to synthesize and to couple to antigens that induce an immune response, may prove useful in the generation of vaccines," said Dr. Bruce Beutler, Director of UT Southwestern's Center for the Genetics of Host Defense. More