Masson’s trichrome stained kidney sections from mice 4 weeks after renal ischemia reperfusion injury. Mice exposed to ultrasound 24 hours prior to ischemia (right) have preserved renal morphology as compared to the fibrotic, trichrome positive staining (blue) observed in kidneys of mice receiving ischemia alone (left). Joseph C. Gigliotti, Mark Okusa, University of Virginia, Charlottesville, VA 2743355mm (600 3 600 DPI)