Christine L. Case is a registered microbiologist and professor of microbiology at Skyline College in San Bruno, California, where she has taught for the past 25 years. In addition to teaching and affiliations with numerous scientific organizations, Chris contributes regularly to professional literature, develops innovative instructional methodologies, and maintains a personal and professional commitment to conservation and the importance of science in society. She is an avid photographer and many of her photographs appear in Microbiology: An Introduction.