Assertion: embryo's cell | /r/CapableOf | interact with trophoblast cells
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Source sentences:
text: They also showed that isolated placental trophoblast cells expressing L-selectin stuck much more strongly to carbohydrates on uterine epithelial cells collected when the uterus is receptive to implantation than during non-receptive times - strong confirmation of the L-selectin-carbohydrate interaction, since it is known that implantation normally occurs when these uterine cells interact with trophoblast cells.