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Heather L. Arnold
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Gopi Menon, M.S.Ch.E.
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Colleen Carkeet, PhD
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Steve Missler, PhD
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Lynne Connor, PhD
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Mary Murray, Ph.D.
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KaLee Dahlin, MS
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Mark Proefke, PhD
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Audra Davies, M.S.
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Don Pusateri, M.S.
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Pete DeBus
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Shyam Ramakrishnan, PhD
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Kevin Gellenbeck, Ph.D.
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Keith Randolph, Ph.D.
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Kerry Grann, DrPH
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Kevin Robinson
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David G. Groh
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Lisa Rozga
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Chioma Ikonte, PhD
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Jeffrey Scholten, PhD
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Rodney Johnson, M.S.
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Micheline Vargas, DrPH, RCEP
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Marc Lemay, PhD
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Zachary Wahl
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Yingqin Li, MS
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Jean Wang, PhD
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Yumei Lin, PhD
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Bill Luke
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Senior Research Scientist, Concentrate Development
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Dr. Gellenbeck has been with the NUTRILITE™ brand for over 20 years. He is currently conducting research investigations in the areas of agriculture, development of human nutritional products, and functional analysis of such products through bioassays, genetic expression, phytochemical analysis, and clinical testing. Additional areas of interest include carotenoids in nutrition and algal growth technologies.