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Objective
To identify trophoblastic cells retrieved from the cervix at a gestational age (GA) of 5–9 weeks by a noninvasive modality in fetuses.
Method
Transcervical cells (TCCs) were noninvasively extracted by a cytobrush using the Papanicolaou sampling method. TCCs were immunostained with antihuman leukocyte antigen (HLA)‐G and anticytokeratin (CK)‐7 antibodies to identify trophoblastic cells...
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