Research Flow Cytometry Core Director

A photo of Sherry Thornton.Sherry Thornton, PhD
The Research Flow Cytometry Core is directed by Dr. Sherry Thornton. In 2002 Dr. Thornton became assistant flow core director for the Rheumatology Center Grant (NIHP30) and began serving as the core director in 2005. In 2008 she took on a larger role in flow cytometry at Cincinnati Children’s as director of the Research Flow Cytometry Core, which houses all flow cytometry instrumentation involved in basic research. Email Sherry.

Research Flow Cytometry Core Manager

Photo of Celine Silva Lages, PhD.Celine Silva Lages, PhD
Celine received her PhD in aging biology at the University of Paris 7 (France). She has extensive knowledge in immunology and hepatology, and worked on murine, human and non-human primate samples. Celine was trained in flow cytometry in 2000 and has expertise in flow cytometry panel design and analysis.  She joined the RFCC as manager in October 2018. Email Celine.

Research Flow Cytometry Core Staff

A photo of Sarah Croswell.

Sarah Croswell
Sarah has a BS from Miami University and began working with the core facility in 2007. Sarah provides hands-on training and troubleshooting for the analytical cytometers and ImageStreamX and one-on-one assistance with data analysis using flow cytometry analysis software on the workstations in our core. Email Sarah.


A photo of Alex Dias.

Alexandra Dias
Alexandra (Alex) received her BS in Biomedical Technology from Barao de Maua University (Brazil) and has extensive experience in immunological research. Alex joined the RFCC in 2014 where she operates the FACSAria and MoFlo XDP and provides technical assistance on the analytical cytometers. Email Alex.


A photo of Tim Hubbell.

Tim Hubbell
Tim received his BA from the University of Cincinnati and has many years of experience in biomedical research on topics ranging from immunology to fluorescent spectroscopy. Tim joined the RFCC in 2010 as a cell sorter operator where he mainly operates the FACSAria’s and the MoFlo XDP cell sorters. Email Tim.


A photo of Alyssa Sproles.

Alyssa Sproles
Alyssa received her BA in Biology from Northern Kentucky University and has extensive experience in immunological research. As manager of the Cincinnati Cytokine/Mediator Measurement Core she performs assays measuring protein analytes from a variety of fluids and/or tissues using Luminex and ELISA technologies. She also provides technical help on the analytical cytometers. Email Alyssa.

 Viji Vummidi Premkumar

Vidjaya (Viji) Letchoumy Vummidi Premkumar
Viji received her PhD in Biochemistry and has been performing research on topics ranging from telomere formation to obesity and metabolism as well as cell signaling in breast cancer. She joined the RFCC in March of 2017 and her main responsibility involves operating the FACSAria cell sorters. Email Viji.

Mark Stottlemyer.

Mark Stottlemyer
Mark received his BS in Biological Science at the University of Pittsburgh and has experience in immunological research. His recent experience involves using flow cytometry in a CLIA certified, AIDS monitoring laboratory. He joined the RFCC in February of 2018 and his main responsibility is operating the MoFlo cell sorter. Email Mark.

Elizabeth Krekeler

Elizabeth Krekeler
Elizabeth is currently completing a BS in Biological Sciences from University of Cincinnati and has experience in immunological research. She joined the RFCC in October of 2018, she mainly performs startups and cleaning for the analytical cytometers. Email Elizabeth.