it is argued that the place of highest concentration of these hormones is on the surface of the syncytial microvilli and the adjacent caviolae of the apical plasma membrane , as well as on the surfaces of the persisting cytotrophoblastic cells of the basal plate ( cytotrophoblastic shell ) , the cell islands and the septa-precisely where the immunological challenge of the foetal allograft to the maternal host occurs .
C0699040
surfaces of
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cell