>Fetal lambs were transferred to EUDs at gestational ages (age of the pregnancy measured from the date of last menstruation as opposed to the date of conception

>Fetal lambs were transferred to EUDs at gestational ages (age of the pregnancy measured from the date of last menstruation as opposed to the date of conception) of 104 to 125 days (term is ∼145 days). At 100-115 days of gestation, lamb fetuses are biologically equivalent to 22-24 week premature human infants from the perspective of lung development