The Foundation for the National Institutes of Health (FNIH) has selected Karl Deisseroth (Stanford), as the 2015 winner of the Lurie Prize in Biomedical Sciences. Dr. Deisseroth is being recognized for leading the development of optogenetics, a technology for controlling cells with light to determine function, as well as for CLARITY, a method for transforming intact organs into transparent polymer gels to allow visualization of biological structures with high resolution and detail.