Specific Formulation of Camellia sinensis Prevents Cold and Flu Symptoms and Enhances 
T Cell Function: A Randomized, Double-Blind, Placebo-Controlled Study
Cheryl A. Rowe, PhD,
Meri P. Nantz, BA,
Jack F. Bukowski, MD, PhD and
Susan S. Percival, PhD
Food Science and Human Nutrition Department, University of Florida (C.A.R., M.P.N., S.S.P.), Gainesville, Florida
Divison of Rheumatology, Allergy & Immunology, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School (J.F.B.)
Nutritional Science Research Institute (J.F.B.), Boston, Massachusetts

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Fig. 1. The percentage of 55 CSF subjects and 53 placebo subjects who had at least one symptom during the 12-week study period.
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Copyright © 2007 by the American College of Nutrition.