Journal of the American College of Nutrition -- Brown et al. 20 (5): 520 Figure 2

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Fig. 2. Serum free testosterone concentrations during four weeks of nutritional supplementation. * = Significantly different from week 0 for AND-HB (Treatment by Week effect, p < 0.05); ${ddagger}$ = 50 year olds significantly different from 30 year olds at baseline (Age by Week effect, p < 0.05). Data are means ± SE.