antibodies to serum proteins were removed by solid-phase immunoabsorption with normal human serum , and indirect immunofluorescence experiments with cryostat sections of human placentas showed that the absorbed anti-trophoblast sera reacted with trophoblasts as well as with stromal cells and endothelium of chorionic villi .
C0032043
placentas
C0008508
chorionic villi