Development of Hemoglobin 100 岁980 60 40 5日 0 20 少 2 68 Birth 2 4 0=6 8 Months0 2 4 6 8 Birth 2 4 6 8 Months 100 80 60 40 Percentage of 20 globin synthesis(%) Development of Hemoglobin δ ζ ε α γ β α