On the other hand, neonates have underdeveloped livers that are unable to process large amounts of bilirubin and a poorly developed blood–brain barrier that is unable to block bilirubin from entering the brain. This can result in kernicterus if left unchecked.
On the other hand, infants lack fully formed livers capable of processing significant levels of bilirubin and have an immature blood-brain barrier that fails to block bilirubin's entry into the brain. If this condition is not treated, it can result in kernicterus.