The Mouse Transgenic and Gene Targeting Core team of experts are here to help you achieve your goals. Please reach out with any questions at any stage in the process.

The TMF Core is supported by the Emory University School of Medicine and is one of the Emory Integrated Core Facilities (EICF). We provide state of the art equipment and expertise for generating and characterizing genetically altered mouse models.

Please contact us at MouseCore@emory.edu so that we may assist you

TMF Leadership

Karolina Nitsche, MSc, PhD

Core Director
Mouse Transgenic and Gene Targeting Core


Dr. Karolina Nitsche is the EICF Scientist and Core Director for the Mouse Transgenic and Gene Targeting Core Facility since 2019. She has worked in the Core since 2014 and served as Associate Director since 2017. She is a mammalian embryologist with nearly 20 years of experience in the field of reproductive and developmental biology and genetics.
She obtained her PhD in Experimental Embryology from the Polish Academy of Sciences in Warsaw. Consequently, she performed postdoctoral work at the University of Cambridge, the Wellcome Trust/Cancer Research UK Gurdon Institute, the Yerkes National Primate Research Center, and Emory’s Department of Human Genetics. Dr. Nitsche enjoys serving Emory investigators.
She has been heavily involved in establishing outstanding service in generating CRISPR-edited alleles, creating a highly efficient standard operating protocols for the Core, and introducing new ones like rat sperm and embryo cryopreservation service.

Tamara Caspary, PhD

Scientific Director
Mouse Transgenic and Gene Targeting Core


School Of Medicine directory

TMF Team

Steven Roache, RLATg

Research Specialist, Lead
Mouse Transgenic and Gene Targeting Core


Steven Roache is a Lead Research Specialist with an extensive career background in animal handing techniques and procedures. Steven’s animal research career began at University of Pennsylvania as an Animal Laboratory Technician. Over the past 15 years, Steven has worked at laboratories at the Children’s Hospital of Philadelphia/Charles River, and the University of North Carolina at Chapel Hill.  For the past five years, Steven has been employed at Emory University in various laboratory and research departments.  Steven started at Emory in 2015, working as animal technologist at T3 labs, an offsite laboratory facility in Downtown Atlanta, GA. Later that year, Steven was working for the Division of Animal Resources (DAR) at Emory University’s main campus on the Clifton Corridor. In 2016, Steven started working full time with the Transgenic Mouse and Gene Targeting (TMF) Core as a Research Specialist. In the TMF, Steven performs various procedures such as surgery preparation, maintaining rodent colony, animal injections, paired mating, PCR applications, and gel electrophoresis. Steven has been certified by the American Association for Laboratory Animal Science (AALAS) as an Assistant Laboratory Animal Technician (ALAT) and a Laboratory Animal Technologist (LATg).


Hanson Acheampong, RLAT, BS

Research Specialist, Lead
Mouse Transgenic and Gene Targeting Core


Hanson Acheampong joined Emory University in September 5, 2005. Over the past 15 years Hanson has worked for Division of Animal Resources, under School of Medicine, Emory University. He worked in DAR Manage Breeding Services for 8 years as Animal Laboratory Technician. In 2014 Hanson joined DAR Veterinary Staff and worked in Quarantine Services as Rodent Import Coordinator and Animal Laboratory Technician. In 2015 he became fully DAR Veterinary Technician, worked in DAR Quality Assurance & Diagnostic Laboratory and Animal Import/Export (Quarantine Services). Hanson became Research Specialist in 2020 and managed DAR Colony Health Surveillance (Sentinel Program). He joined Emory Transgenic Mouse and Gene Targeting Core (TMF) as Lead Research Specialist performing various specialty procedures such as rodent reproductive tissue harvesting for sperm/ embryo cryopreservation and re-derivation, rodent colony breeding, and maintenance, surgery preparation, and animal injections.