Fetal hemoglobin
(重定向自Hemoglobin F)



Fetal hemoglobin, or foetal haemoglobin, (also hemoglobin F, HbF, or α2γ2) is the main oxygen transport protein in the human fetus during the last seven months of development in the uterus and persists in the newborn until roughly 6 months old. Functionally, fetal hemoglobin differs most from adult hemoglobin in that it is able to bind oxygen with greater affinity than the adult form, giving the developing fetus better access to oxygen from the mother's bloodstream.