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Figure 5: Immunophenotype of mesenchymal stem cells prior (left) and after (right) hepatocyte differentiation for 21 days. (a–f) negative controls, (b–g) CK7, (c–h) albumin, (d–i) alpha1-antitrypsin, and (e–j) CK19. Original magnification 20x. The insert h1 represents an enlargement of the cell highlighted by the white square.