London. Scientists have managed to create "mini-placenta" in the laboratory, hoping that they will be able to find answers to the dangerous and tragic complications of pregnancy, such as stillbirth and pre-eclampsia.
They are believed to be caused by problems with the placenta in the first three months after conception.
Mini-placenta, so small that they are invisible to the naked eye, were grown by a team led by the University of Cambridge.
Professor Ashley Moffett of the Department of Pathology at the university and co-author of a study published in the journal Nature said: "We hope that what we see in these mini-placentas sheds light on why some pregnancies do not work."
Mini-placenta also secrete protein that is thought to affect the brain, causing vomiting. This discovery may lead to drug use for severe morning sickness, as Catherine, the Duchess of Cambridge, survived.