We are very pleased and honored to have the opportunity to dedicate a series of papers to our dear friend, mentor and colleague, Valery V. Tuchin, to commemorate the occasion of his 70th birthday. Prof. Tuchin is one of the founders of the Biophotonics field whose remarkable work has advanced the frontiers of light- Tissue interaction. He is best known for his textbooks such as Tissue Optics: Light Scattering Methods and Instruments for Medical Diagnosis and Handbook of Biophotonics, but his research encompasses virtually all aspects of optical measurements in biomedicine with incredible 400+ peer-Reviewed publications.