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Photosensitization by hypericin: Electron spin resonance (ESR) evidence for the formation of singlet oxygen and superoxide anion radicals in an in vitro model

PhotochemistryBiochemistrySinglet OxygenSuperoxide Anion RadicalsElectron Spin ResonanceMedicinePhototoxicityPhotobiologyRadical (Chemistry)PhotoprotectionReactive Oxygen SpeciePhotosensitizersPharmacologyRedox BiologyOxidative StressHealth Sciences