The authors obtained trophoblast culture from an early chorion of human embryo. Trophoblastic cells of the main 4 types described were: giant cells, with processes, fibro-blast-like, and round. All the cells were rich in RNA, glycoproteins, had a set of enzymes of the Krebs pentose cycle, but low activity of succinic dehydrogenase. A marked cytooxic effect… (More)
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