Beta Cell Differentiation Induced by MSCs

a, Schematic depicting implantation of human ESC-derived progenitors. b, Immunofluorescence staining of human ESC-derived endoderm, passaged seven times on mesenchyme and engrafted for 3 months (top panel) or further differentiated to Pdx1+ stage and then engrafted for 2 months (bottom panel). c, Glucose-tolerance test of animals implanted with PBS or mesenchyme only, human islets or Pdx1+ pancreatic progenitors derived from unpassaged (P0), or passaged (P4 or P7) human endoderm. d, Fasting- and glucose-induced (45 min glucose) plasma human C-peptide levels. Pairs of bars represent two time points per animal; data represent mean of two technical replicates ± s.d.

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