 The stored samples will be used in studies to help researchers understand normal events in pregnancy, as well as events that occur when women andor their babies have a disease or condition during pregnancy. Additionally, the samples may be used in future studies to develop cell lines for research, create tests to diagnose disease, or develop treatments. A cell line is the result of cells grown outside the body in a laboratory. This process will allow those cells to grow continuously when given the appropriate nutrients and conditions for growth, and will result in a permanent cell culture which is the collection of cells that are grown outside the body in a laboratory. 