Fig. 5

Raman spectra of the MSC-derived hepatocytes after glycogen digestion. a The cell morphology (top) and Raman spectra (bottom) of the MSC-derived hepatocytes at day 14 of hepatic differentiation with or without diastase treatment for glycogen catalysis. b The Raman spectra of 10 % glycogen solution. Scale bars = 20 μm. HD Hepatic differentiation day, MSC Mesenchymal stromal cell, PBS Phosphate-buffered saline