MUC1* ligand, NM23-H1, is a novel growth factor that maintains human stem cells in a more naïve state.

Although stem cells that were harvested for RT-PCR quantification were essentially 100% pluripotent by visual inspection based on cell morphology and nucleus to cytoplasm ratio, it is possible that large standard errors or lack of an apparent trend is due to having a cell population that contained some newly differentiating cells.

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A statistical analysis shows that the differences in gene expression between our system and other culture conditions are highly significant ( Fig.

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