to compare ra-induced differentiation of mouse and human ec cells , the delta nt2d1 cdna library was rescreened with 32p-cdnas derived from the mouse ec cell line f9 and the result compared with 32p-cdna derived from f9 differentiated to parietalendoderm ( f9pe ) -like cells and visceral-endoderm ( f9ve ) -like cells .
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differentiated
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cells