The immunologic interaction between the fetus and the mother is a paradoxical communication that is regulated by fetal antigen presentation and/or by recognition of and reaction to these antigens by the maternal immune system. There have been significant advances in understanding of abnormalities in the maternal-fetal immunologic relationship in the placental bed that can lead to pregnancy diso...

2 biologic and 7 immunologic pregnancy tests were evaluted on the basis of results obtained over a 10-year period. The test evaluated were the Friedman test, the rat ovarian hyperemic test, the urinary chorionic gonadotropin test, the Pregnosticon tube test, the Gravindex slide test, the Pregslide test, the HCG test and the Pregnosticon slide test. The biologic tests were found to be superior ...