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Plasma cortisol obtained in men (A), women (B), and children (<14 years old) of both genders (C). Lysine, lysine-fortified group. Pre- and postfortification measurements were conducted by the local staff. Means + SEM of 28 and 34 males, 48 and 44 females, and 36 and 30 children are shown. The bars with different letters differ significantly (two-way ANOVA followed by paired or unpaired t test as appropriate).
