Dr. Campbell has over 30 years of experience in exotic animal medicine. His research interests focus on exotic animal cytology, hematology, and plasma biochemistry and he is the co-author of Exotic Animal Hematology and Cytology, 4th Edition, the definitive hematologic and cytologic reference for all veterinarians and researchers working with avian and exotic animals. Dr. Campbell is also the co-author of Clinical Cases in Avian & Exotic Animal Hematology & Cytology, a hands-on guide that takes the reader through nearly 100 clinical cases.