Professor David T. Yew is the professor emeritus of anatomy in the School of Biomedical Sciences, Chinese University of Hong Kong. He has engaged in research of human and animal neuroscience, drug discovery, and drug toxicology, using various techniques of pathology, immunocytochemistry, cytochemistry, and imaging. Professor Yew’s area of specialty is research on neurodegeneration, particularly damage to the nervous system brought about by ketamine abuse, and is now one of the major global leaders in this area.