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. 2009 Oct 7;97(7):2107–2114. doi: 10.1016/j.bpj.2009.07.026

Figure 4.

Figure 4

FTIR-MSP spectra of necrotic cells. (a) Untreated U937 cells and treated with 0.2 mg/mL saponin for 10 min and (b) subjected to freeze-thawing. Second derivative IR spectra after baseline correction and vector normalization are shown.