Christie M Sayes is an Associate Professor of Environmental Science and Toxicology at Baylor University. She is a Subject Matter Expert in nanomaterial-related toxicology and exposure. Her activities include working with partners, collaborators, and clients in designing and directing studies and training and advising facility staff. She possesses a working knowledge of laboratory science and US regulatory climates. Her routine activities include data collection, analyses, and interpretation as well as results documentation and reporting. She functions as point of contact for study control.