Dr. Rodger MacArthur, an infectious-disease specialist at Wayne State, commented about a new AIDS drug called Darunavir that is "significantly better" at attacking highly resistant HIV than existing drugs, based on a recent study of 230 AIDS patients. Those who took Darunavir lowered virus levels to the undetectable range in 45 patients after 48 weeks. "The results were very, very good - in many ways, perhaps, better than anyone would've expected," said MacArthur, who was not affiliated with the study.