The Medical College of Wisconsin has leveraged a $2.5 million grant, part of the Bush Administration’s “War on Drugs,” to partly fund a new, wide-ranging research facility. The school’s technology transfer office calls the $8.3 million facility another step forward in its efforts to move scientific discoveries into new products that can help patients. Among other things, its high-powered imaging equipment will be used to study the effects of cocaine on the brains of rats. The facility also will be available for other projects by scientists from across the state.