The cat is much more obviously ill than with retention of fetal membranes. (vcahospitals.com)
A miscarriage in the 15th week of pregnancy can be incomplete, which happens when fetal membranes rupture but only some of the fetal tissues come out. (infobaby.org)
In addition, the team dissected fetal membranes from the placenta after babies were delivered at term. (sciencedaily.com)