Ann Griffen

griffen.1 at OSU dot edu

Dr. Ann Griffen received her dental and pediatric dental training at the University of Texas Health Science Center in Houston, and her molecular genetics training at Ohio State. She is currently Professor and Director of Research in the Section of Pediatric Dentistry.


leys-eGene Leys

leys.1 at OSU dot edu

Dr. Eugene Leys is a professor in the Division of Biosciences. He did his graduate work at Baylor College of Medicine and his postdoctoral work at the Carnegie Institute at Johns Hopkins.


Clifford Beall

beall.3 at OSU dot eduCliff

Clifford Cliff Beall is a Research Associate Professor in the Division of Biosciences, OSU College of Dentistry. He received his BS in Biology from the California Institute of Technology, a PhD in Biological Chemistry from Harvard University, and an MSc in Intelligent Systems from the University of Sussex (UK). He has been working with Dr. Leys and Dr. Griffen since December 2009, managing bioinformatics and data analysis for the group.


Christina Igboin

igboin.2 at OSU dot edu


Christina graduated from The Ohio State University in March 2000, with a degree in Microbiology. She began working in the lab as a research assistant a few months later, and her research involved characterizing strains of Tannerella forsythia and using q-PCR to determine the levels of Porphyromonas gingivalis, in clinical samples. She began graduate school at OSU College of Medicine in 2002, and her thesis projects included microarray-based comparisons of clinically prevalent P. gingivalis strains, and developing Drosophila melanogaster as a model for examining oral bacterial-host interactions. She received her PhD in Integrated Biomedical Science (Microbial Pathogenesis) in 2008. Christina’s current research focuses on using the Drosophila model to identify virulence-enhancing and virulence-ameliorating interactions between oral species, and examining oral microbe-microbe and microbes-host interactions at the transcriptomic level.


Chiranjit “Ran” Mukherjee


mukherjee.55  at OSU dot edu

Ran completed his Master’s in Microbiology at OSU and is currently working on his PhD in Biomedical Science at OSU. His main research interest is in characterizing host-associated microbial communities at very high-resolution, using state-of-the-art molecular and bioinformatic approaches. He is responsible for developing and implementing various bioinformatic processing pipelines, as well as analyzing microbial sequencing data. Ran is highly proficient in R, Python, MySQL, UNIX and BASH.


Shahr Hashmi
hashmi.2 at OSU dot edu
Shahr Hashmi graduated from The Ohio State University with a degree in Microbiology. Her responsibilities in the lab to isolate DNA from various clinical samples and get them ready for Next Generation Sequencing.




Poca is a Chihuahua/Toy Fox Terrier mix, and she is the Griffen-Leys lab mascot. She loves people, treats, naps, sunny days, and hosting the other lab members at the annual lab retreat in Tucson, AZ.