Comparative Biology Unit

The Comparative Biology Unit (CBU) is a 25,000-square-foot animal research facility that is fully accredited by the American Association for Accreditation of Laboratory Animal Care. The CBU has an all-inclusive clean-dirty corridor system, with anteroom extensions in some rooms. The unit offers a wide range of services, including: comprehensive animal care, transgenic rodent breeding services, veterinary surveillance, diet preparation and individualized animal dietary services, animal monitoring, surgery and necropsy. The CBU adheres to strict environmental control guidelines and complies with the Animal Welfare Act provisions; and animal welfare guidelines such as the NIH Guide of the Care and Use of Laboratory Animals standards. All animal studies are reviewed and approved by the institutional Animal Care and Use Committee.

Donald Smith, Ph.D., CMAR, CPIA
Manager, Scientist II
Clinical Assistant Professor, Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy
Provides administrative and scientific direction to ensure compliance with approved research protocols and government regulations. Serves as the liaison between the veterinary, research and administrative staff.

Senait Assefa, M.S., A.L.A.T., Laboratory Animal Technician
Jonathan Morrison, M.S., L.A.T., Laboratory Animal Technician
Anthony Sealy, Laboratory Animal Technician
Lisa Tan, Assistant Laboratory Animal Technician
For contact information, please click on the scientist’s webpage or visit the Tufts University online directory at