Figure 2From: The relationship between consumption of tyrosine and phenylalanine as precursors of catecholamine at breakfast and the circadian typology and mental health in Japanese infants aged 2 to 5 yearsIntake of phenylalanine plus tyrosine and morningness-eveningness scores in young Japanese children aged 2 to 5 years. 106 infants: 1 to 799 mg; 669 infants: 800 mg or more. M-E, morningness-eveningness; SE, standard error.Back to article page