A sealant inspired by mussels’ ability to stick to surfaces under wet conditions has shown promise in the repair of defects in human fetal membranes, according to a new study. During a pregnancy, such defects — ruptures or holes — can lead to the leakage of amniotic fluid, resulting in premature labor or termination of the pregnancy. In tests, the new sealant was found to be biocompatible and effective at sealing the tiny holes.