Fig. 4From: Detection of hepatic maturation by Raman spectroscopy in mesenchymal stromal cells undergoing hepatic differentiationReal-time monitoring of hepatic differentiation from the MSCs by Raman spectroscopy. a Raman spectra in 400–3000 cm–1 was detected during hepatic differentiation from the MSCs. b The broad band ranges 400–565 cm–1 and 2800–3000 cm–1, and the peak at 1439 cm–1. HD Hepatic differentiation day, MSC Mesenchymal stromal cellBack to article page