studies were carried out during the postnatal period in infants born at or before the 32nd wk of gestation to determine the proportion of fetal hemoglobin ( hb f ) and adult hemoglobin ( hb a ) being synthesized , and to compare these studies to those previously reported on at birth from normal newborn infants 25-43 wk gestation .
C0015936
hb f
C0019046
hb