1 Use a small screwdriver to press the spline into the corners as necessary. 2  As you press the spline into the frame it will make the screen taught. 3  Once installed, trim the excess screen material with scissors or a utility knife.
In normal pregnancy the mean fetal haemoglobin increases linearly from 11 g/dl at 17 weeks' gestation to 15 g/dl at 40 weeks' gestation and one standard deviation is approximately 1 g/dl. The haemoglobin was also measured in fetal blood from 154 red cell isoimmunised pregnancies from 17 to 36 weeks' gestation.
*Note--Fetal Hemoglobin: Fetal Hb (Hb F), is a normal Hb product in the red blood cells of a fetus and in smaller amounts in infants. It constitutes 50% to 90% of Hb in a newborn; the remaining Hb consists of Hb A1 and Hb A2 the Hb in adults.Note--Fetal Hemoglobin: Fetal Hb (Hb F), is a normal Hb product in the red blood cells of a fetus and in smaller amounts in infants. It constitutes 50% to 90% of Hb in a newborn; the remaining Hb consists of Hb A1 and Hb A2 the Hb in adults.