Our Team

Our Team

Dr. Denise Imai-LeonardDr. Denise Imai-Leonard

DVM, PhD, DACVP - Director and Health Sciences Associate Clinical Professor
Dr. Imai has greater than 12 years of comparative diagnostic and investigative pathology experience. She has stepped up from staff pathologist to lead the laboratory in 2018, after the retirement of Dr. Stephen Griffey. Her focus is in spontaneous and infectious diseases of laboratory animals, in laboratory aquatic animals, in mutant mouse phenotyping, and in geropathology.

Jenelle FraserJenelle Fraser
ASCP certification Clinical Laboratory Scientist – Assistant Director, with greater than 25 years of experience in veterinary medical diagnostic laboratory management, quality control/quality assurance and oversight of necropsy and serology services at CPL. 

Dr. Gabrielle PastenkosDr. Gabrielle Pastenkos
DVM, Ph.D. – Comparative Pathologist. Dr. Pastenkos was trained at Washington State University and Memorial Sloan Kettering Cancer Center and has a background in animal models of infectious disease.

Stefanie CarrollStefanie Carroll
MS – Laboratory technician responsible for the microbiology and clinical pathology (hematology and serum biochemistry) services. Stef has greater than 15 years of experience and is currently developing an aquatic animal microbial surveillance program and integrating mass spectrometry (MALDI TOF) into CPL bacterial identification methods.

Cathy IntaCathy Inta
Laboratory technician with expertise in the development of quantitative probe-based PCR assays. Cathy manages the Molecular diagnostic service and has recently developed an assay for Mouse Kidney Parvovirus (Mouse Chaparvovirus). 

Brett MooreBrett Moore
Laboratory technician responsible for the management and performance of serology services. Brett has 16 years of experience including specific expertise in generating polyclonal antibodies and though CPL does not currently offer these services, she is available for consultation. 

Melea HunrathMelea Hunrath
Laboratory technician with daily operational supervision of necropsy and research pathology services. Melea routinely hosts workshops to train investigators and graduate students in rodent prosection and sample procurement techniques.

Briana LunaBriana Luna
Experienced necropsy diener with a background in diagnostic evaluation of and pathogen surveillance in livestock and poultry. 

Melea HunrathVictoria Smith
MS - Laboratory staff research associate in necropsy, clinical pathology and microbiology. Has a background in study design using pathology end-points, model development in pigs and manuscript generation.  

Kacey DonovanKacey Donovan
Over 20 years UC Davis experience. Serves as a financial analyst, billing administrator and human resources. Oversees budgetary and personnel operations for CPL.

Kevin MorisetteKevin Morisette
Applications developer and database/system administrator with 20 years of programming experience. Developed, implemented and continually improves upon the CPL laboratory information management system (LIMS) and client web portal. 

Cathy WhiteCathy White
Client service provider with 15 years at CPL. Manages data flow, reporting, and client communication.



Dr. Stephen M. Griffey, DVM, Ph.D. – retired Director and Health Sciences Clinical Professor. A comparative pathologist with over 20 years of expertise in infectious diseases of laboratory rodents, health surveillance program oversight, and diagnostic and phenotyping pathology.

Dr. Kerriann Casey, DVM, DACVP – former Laboratory Animal Pathology Resident and current Clinical Assistant Professor and Director of Necropsy Services at Stanford University. Dr. Casey excels as a diagnostician and specializes in rodent model development.   


Dr. Melissa Roy, DVM – current Laboratory Animal Pathology Resident.

External Advisory Board

Dr. Stephen M. Griffey, DVM, PhD

Dr. Chris Murphy, DVM, Ph.D., DACVO 

Dr. Stephen Barthold, DVM, Ph.D., DACVP 

Dr. Sean Owens, DVM, DACVP