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. 2009 Oct 12;4(10):e7408. doi: 10.1371/journal.pone.0007408

Figure 3. Second derivatives of IR spectra.

Figure 3

Spectra recorded on steatosis or non-steatotic hepatocytes were superimposed (upper panel). Second derivatives of the spectra were calculated and superimposed in the frequency domain 2600–3200 cm−1 (lower panel).