Sandra Sexton.

Sandra Sexton

Associate professor of oncology
Roswell Park Comprehensive Cancer Center

Sandra Sexton is associate professor of oncology and facility director and attending veterinarian at the Comparative Oncology Shared Resource (COSR) at the Roswell Park Comprehensive Cancer Center. She earned a doctorate in veterinary medicine in 1991 from the University of Agricultural Sciences in Bogotá, Colombia. After working in private practice and then relocating to the United States, she obtained a degree certification in veterinary medicine and surgery and completed a postdoctoral residency in laboratory animal medicine from the Division of Comparative Medicine at Buffalo State University.

Sexton joined the Roswell Park Comprehensive Cancer Center in 2003 as a research affiliate and postdoctoral veterinary resident, where she was appointed institute veterinarian of the Laboratory Animal Shared Resource (LASR) and promoted to facility director and attending veterinarian in 2006. She was board certified as a diplomate of the American College of Laboratory Animal Medicine in 2013. As COSR director and attending veterinarian, she provides support to scientists across the Cancer Center Support Grants with diverse experimental objectives, as well as operational leadership at the LASR, which provides facilities, personnel and equipment to assure compliance with all regulatory requirements and maintain AAALAC international accreditation.

Explore more from The Transmitter

Connexiohuman Connexin 26 dodecamer at 90mmHg PCO2, pH7.4

Designer synapses edit brain circuits in living animals

The approach could help elucidate relationships between circuit structure and function, as well as the role of natural electrical synapses.

By Simon Makin
23 June 2026 | 5 min read
Research image of cortical excitation–inhibition balance.

Role of GABA-A receptors in dup15q syndrome, and more

Here is a roundup of autism-related news and research spotted around the web for the week of 22 June.

By Jill Adams
23 June 2026 | 2 min read
Thermal image of Danionella fish.

Exclusive: Janelia sunsets rodent work, launches transparent fish project

The Howard Hughes Medical Institute’s Janelia Research Campus is banking on whole-brain imaging in the Danionella fish to advance neuroscience, but some scientists forced to close their labs say that even with a three-year runway and transitional support, they feel betrayed by the pivot.

By Calli McMurray
22 June 2026 | 5 min read