| The placenta derives from embryonic cells called trophoblasts, which form a ball around the cells that ultimately develop into the fetus. |
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| Choriocarcinoma is a malignant tumor derived from trophoblasts that has high metastatic potential. |
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| Flt-1 is also present on trophoblasts and macrophages, whereas KDR is present on hemopoietic stem cells, megakaryocytes, and retinal cells. |
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| Membrane microscopic chorionic pseudocysts are associated with increased amount of placental extravillous trophoblasts. |
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| Placental trophoblasts express and produce coagulation components, participating not only in haemostasis but also in placental vascular development and differentiation. |
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| When Fisher and researchers at a fertility clinic examined unused human embryos donated for research, they found that human trophoblasts make L-selectin. |
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