Diane DeKerlegand, MT (ASCP) is a Nutritionist in the Nutritional Biochemistry Laboratory. She received her B.S. in Medical Technology from Trinity Christian College. She has been responsible for the laboratory analyses of numerous bone and antioxidant status markers in specimens from ground-based and flight studies since 1997, and has also participated in the implementation of a LCEC liquid chromatography electrochemical method for detection of a marker of hydroxyl radical damage to DNA. During the past eleven years at JSC, she has been involved with Clinical Laboratory support of astronaut physicals at Shuttle launch and landing sites. In the Pharmacology Laboratory, she participated in Shuttle and Mir investigations of both DSO 622 (GI Function During Extended Duration Space Flight) and DSO 484 (Assessment of Circadian Shifting in Astronauts by Bright Light).

YaVonne Bourbeau is a Nutritional Biochemist with the Nutritional Biochemistry Laboratory. She received her A.A.S. in Medical Technology at Alvin Community College. She has worked as a laboratory technologist with Drummond Reference Labs, UTMB, and St John's for the last 13 years. She joined the Nutritional Biochemistry Laboratory in 2006 and currently performs many of the analyzer based methods including amino acids, anti-oxidants and general urine chemistries.

Tiffany Chew is the lab coordinator for the Nutritional Biochemistry Laboratory. She received her B.S. in Biomedical Science from Texas A&M University in 2006. Tiffany joined the Nutritional Biochemistry Laboratory in April 2007, and she assists in several areas including travel and providing nutritional provisions to research participating crewmembers as well as compiling data from previous and recent ground-based and space flight nutritional assessment studies.

Patricia L. Gillman, MS, (ASCP) is a Nutritionist in the Nutritional Biochemistry Laboratory. She received a B.S. in Animal Science from Texas A&M University in 1988, and a M.S. in Nutrition, also from Texas A&M University in 1995. She received certification in chemistry from the American Society of Clinical Pathologist in 1997. She has been responsible for method development and research protocols to support nutritional status assessment during space flight since 1998. She has also been involved in the planning of investigations of bone and calcium metabolism for the International Space Station.

Geeta Kala, PhD is a Senior Scientist in the Nutritional Biochemistry Laboratory. She received an M.S. in Biochemistry from University of Hyderabad, India in 1986 and a Ph.D. in Toxicology from University of Saskatchewan, Canada in 1991. She has participated in several research projects and has conducted studies on Arsenic metabolism using rodent mutant models and cell cultures during her postdoctoral research at Baylor College of Medicine in Houston, Texas. She joined the Nutritional Biochemistry Laboratory in 2005 and is currently responsible for the method development of vitamins using HPLC-electrochemical detection methods in support of ground-based and space flight nutritional assessment studies.

Amanda Messick is the Science Coordinator for the Nutritional Biochemistry Laboratory. She received her B.S. in Bioenvironmental Science from Texas A&M University. She joined the Nutritional Biochemistry Laboratory in July 2006 and is responsible for the processing and the organization of ground based research and space flight samples.

Barbara L. Rice, MS, RD, LD is the Research Dietitian for the Nutritional Biochemistry Laboratory. She received a B.S. in Dietetics and Nutrition from the University of Kentucky and a Master's degree in Nutrition from California State University in Los Angeles. She has been responsible for the nutritional status assessment, including dietary intake monitoring for ground-based and flight studies, since 1990, and provides nutritional counseling to the astronaut corps. Prior to working in the Nutritional Biochemistry Laboratory, she maintained a private practice as a Nutrition Consultant and held several university faculty positions.

Ann Rogers, MT, (ASCP) is a Nutritional Biochemist in the Nutritional Biochemistry Laboratory. She received her B.S. in Medical Technology from Wichita State University in Wichita, KS. She joined the Nutritional Biochemistry Laboratory in 2005 and is currently responsible for the laboratory analysis of several antioxidant markers in specimens from ground-based and space flight nutritional assessment studies.

A. Shanna Wright Rodgers, MS, RD is a Nutritional Biochemist for the Nutritional Biochemistry Laboratory. Shanna received her B.S. in Biomedical Science from Texas A&M University in 2001 and her M.S. in Nutrition, also from Texas A&M University, in 2004. She joined the Nutritional Biochemistry Laboratory in August of 2005, and currently, she is involved with the analyses of urinary
3-methylhistidine, serum transferrin receptors, and retinol binding protein, as well as other research protocols in support of nutrition assessment and countermeasures in both ground-based and space-flight experiments. Shanna also serves as the Medical Assessment Testing (MAT) Coordinator for the Nutritional Biochemistry Laboratory.

Sara Rathman Zwart, PhD is a National Research Council Postdoctoral Associate in the Nutritional Biochemisty Laboratory. She received a B.S. in Biological Sciences from the University of Notre Dame in 1999 and a Ph.D. in Nutritional Sciences from the University of Florida in 2003. Her doctoral work involved studying the effects of anti-epileptic drugs on vitamin metabolism. She joined the Nutritional Biochemistry Laboratory in 2003 and will be involved with the development of nutritional countermeasures for astronauts.