ITHACA, N.Y., June 12 -- A new imaging technique that could lead to optical biopsies without removal of tissue is being reported by biophysical scientists at Cornell and Harvard universities. The advance in biomedical imaging enables noninvasive microscopy scans through the surface of intact organs or body systems. Demonstrations of the new technique are producing images of diseased tissue at the cellular level with unprecedented detail, according to a Cornell statement. 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