Table 1.

Hb types present during development

Developmental stagesNormalBHFS
Embryonic Hb Gower I (ζ2ε2) Hb Gower I (ζ2ε2) 
Hb Gower II (α2ε2) Hb Portland I (ζ2γ2) 
Hb Portland I (ζ2γ2) 
Fetal Hb F (α2γ2) Hb Bart's (γ4) 
Hb Portland I (ζ2γ2) 
Postnatal/adult Hb A (α2β2) Hb H (β4) 
Hb A2 (α2δ2) Hb Portland II (ζ2 β2) 
Developmental stagesNormalBHFS
Embryonic Hb Gower I (ζ2ε2) Hb Gower I (ζ2ε2) 
Hb Gower II (α2ε2) Hb Portland I (ζ2γ2) 
Hb Portland I (ζ2γ2) 
Fetal Hb F (α2γ2) Hb Bart's (γ4) 
Hb Portland I (ζ2γ2) 
Postnatal/adult Hb A (α2β2) Hb H (β4) 
Hb A2 (α2δ2) Hb Portland II (ζ2 β2) 
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