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The representative infrared spectra of healthy BM-MSCs from five different age groups in the 3,000–2,800 cm−1 region. Green line represents infant BM-MSCs; blue line represents children BM-MSCs; pink line represents adolescent BM-MSCs; red line represents early adult BM-MSCs; and black line represents mid adult BM-MSCs (the deconvolved spectra were normalized with respect to the amide A band) (color figure online)
