Spheroid array of fetal mouse liver cells constructed on a PEG-gel micropatterned surface: upregulation of hepatic functions by co-culture with nonparenchymal liver cells

A spheroid array of fetal mouse liver cells, which comprise various immature cells, was constructed on a PEG-gel micropatterned surface and its hepatic activity and degree of differentiation induction were significantly upregulated by co-culture with nonparenchymal liver cells as feeder-cells.