Fetal hemoglobin

Main Entry: fetal hemoglobin
Function: noun
: hemoglobin that consists of two alpha chains and two gamma chains and that predominates in the blood of a newborn andpersists in increased proportions in some forms of anemia (as thalassemia) called also hemoglobin F

fetal hemoglobin n.
The predominant form of hemoglobin in a fetus and a newborn. Normally present in small amounts in an adult, it may be abnormally elevated in certain forms of anemia.