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Lab Members


David M. Harlan, MD

Principal Investigator

William and Doris Krupp Professor of Medicine and Co-Director of the Diabetes Center of Excellence at UMass Chan Medical School, Investigator at the JDRF Center of Excellence in New England

BS, Physiology, University of Michigan, Ann Arbor, MI 
MD, Duke University School of Medicine, Durham, NC, 1980
Residency and Fellowship, Duke University Medical Center 

David M. Blodgett, PhD

Adjunct Assistant Professor

MS, Clinical Investigation, University of Massachusetts Medical School
PhD, Biomedical Sciences, UMass Medical School, Graduate School of Biomedical Sciences
BA, Chemistry & Spanish, Assumption College Worcester, MA

Dr. Blodgett is interested in gene expression differences in pancreatic alpha and beta cells due to diabetes, age, and/or stress.  He was diagnosed with type 1 diabetes at three years old.

Mason Tarpley

Bioinformatician, Cammett Scholar for Type 1 Diabetes Research, Diabetes Center of Excellence, UMass Chan Medical School

MS, Molecular Genetics & Cell Biology, University of Nebraska Medical Center
BS, Biology, Truman State University, Missouri

Mason analyzes the vast volume of data generated during our study of human insulin producing beta cells and the immune cells that attack human islets in people living with type 1 diabetes.

Sambra D. Redick, PhD

Senior Research Scientist

PhD, Molecular Biology, Princeton University
MS, Molecular Biology, Princeton University
BS, Genetics, University of Georgia

Dr. Redick is developing new methods to study human islets & insulin-producing beta cells to understand their role in the type 1 diabetes autoimmune attack.