Laboratory Animal Resources Center (LARC)

An AAALAC International Accredited Unit  


Welcome to the UTSA Laboratory Animal Resources Center!



Our Mission

The Laboratory Animal Resources Center is committed to providing UTSA faculty, staff and students with high quality, cost-effective research animal resources. LARC provides veterinary and personnel training and expertise in laboratory animal technology and medicine.

LARC is dedicated to support the University's research and teaching goals, to promote and assure humane care and use of animals through compliance with the Animal Welfare Act, Office of Laboratory Animal Welfare, Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) International and University policies for the humane care and use of animals.

The LARC advises and educates researchers, staff and students on animal experimentation issues and promotes best practices for the responsible use of animals. These actions result in Quality Science Merging with Animal Welfare.

Our Philosophy

Our primary concern is the welfare of the animals used in the facility. We maintain vigilance in ensuring that the animals experience proper care and handling with minimal discomfort or pain, as well as live in an enriching environment. We adopt and abide by the American College of Laboratory Animal Medicine's Position Statement regarding animal experimentation.

Meet Our Director


Marcel Perret-Gentil, DVM, MS
University Veterinarian & Director
Phone: (210) 458-6692
Fax: (210) 458-6087
LARC Office Location: NPB 2.104
Email: marcel.perret@utsa.edu


Dr. Perret-Gentil serves as University Veterinarian and Director of the Laboratory Animal Resources Center (LARC) at the University of Texas at San Antonio (UTSA). His experience as a Veterinarian (since 1987), and in Comparative Medicine (since 1993) help provide the necessary leadership for UTSA’s animal care and use program. He led UTSA to its first-ever Association for Assessment and Accreditation of Laboratory Animal Care International (AAALAC) accreditation, a key step towards becoming a Tier One research institution.

Dr. Perret-Gentil received a B.S. in Animal Science & Industry and D.V.M. from Kansas State University. After obtaining his D.V.M., he practiced Veterinary Medicine in the U.S. Army. He later completed a residency and received a M.S. in Comparative Medicine at the University of Washington followed by an experimental/minimally invasive surgery post-doctoral fellowship at Ethicon Endo-Surgery. His diverse industry and academic experiences include employments and appointments at Merck, Associate Clinical Professor in the Department of and Associate Professor in the Department of Pediatrics, School of Medicine at the University of Florida. He also obtained an academic appointment as Adjunct Associate Professor, Department of Surgery, School of Medicine, Texas Tech University Health Sciences Center, where he served as the Institutional Veterinarian and Director of the Laboratory Animal Medicine program.

Past research interests focused on minimally invasive surgery and its relatively mild effect on the body’s physiology when compared to open surgery. His current didactic interests are in rodent surgery, anesthesia and analgesia, as well as biomethodologies. His specific areas of experience & training emphasis are in experimental surgery and preparing programs for AAALAC accreditation.

As of August 2013, Dr. Perret-Gentil has published or contributed to 47 papers, articles, abstracts, one book chapter and is a frequent presenter for the Veterinary Bioscience Institute weekly webinar series. He has presented (and is scheduled to present) 227 special presentations at various academic and research institutions, as well as national and international meetings.

He serves as ad hoc Specialist for AAALAC International, and consultant to the biotechnology industry and other institutions of higher education.

Dr. Perret-Gentil has served or is currently serving on the Board of Directors of the Academy of Surgical Research and the Texas Society for Biomedical Research, and is a founding member of the American Association for Laboratory Animal Science (AALAS) Government Relations Committee.

Please visit the following link to view the ACLAM position statement


Contact Information
Laboratory Animal Resources Center
University of Texas at San Antonio
One UTSA Circle
San Antonio, TX 78249
(210) 458-6692 Phone
(210) 458-6087 Fax
larc@utsa.edu