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Fig. 3. Quartile distribution (2575 percentile) of plasma insulin-like growth factor concentration in the Lenoir participants consuming three levels of energy. Data from individual participants obtained during the month of March are included in the analysis. T-bars represent SD of the analysis, with mean shown within each box. Dots represent individual outliers within the sample population. The number of individuals with intakes <5 MJ/day=3, 5 to 7.5 MJ/day=16 and >7.5 MJ/day=13.