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The aim of this study is to show that SR‐FTIRM can be successfully applied for the detection of early apoptotic processes in the human glioma cells (U‐87 MG). The apoptosis was induced by photodynamic action after irradiation of either photosensitizer hypericin (Hyp) or a complex of Hyp with low‐density lipoproteins (Hyp/LDL) incorporated into the cells. The differences between infrared (IR) spectra...