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Photoactivated hypericin increased production of reactive oxygen species in human breast adenocarcinoma MCF-7 as well as in MDA-MB-231 cells 1h after photodynamic therapy. On the other hand, reactive oxygen species dropped 3h after photodynamic therapy with hypericin, but only in MCF-7 cells, whereas in MDA-MB-231 cells remained elevated. The difference in the dynamics of reactive oxygen species after...
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