Aaron Ewoniuk is a PhD Candidate at Lehigh University in Mechanical Engineering while being a Senior R&D engineer at Ventana Medical Systems of Tucson, Arizona where he has created diagnostic imaging systems, high volume tissue (biopsies) stainers, mathematical algorithms, and measurement tools used in clinical pathology. He has engineering degrees from Arizona State University and Lehigh University. Ventana is a division of Roche Pharmaceutical Company, a leader in clinical laboratory equipment.