photosensitizer
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photosensitizer
Oncology A substance that sensitizes an organism, cell, or tissue to light; an agent used in photodynamic therapy which, when absorbed by CA cells and exposed to light, is activated, killing cancer cells. See Photodynamic therapy.photosensitizer
(fō″tō-sĕn′sĭ-tī″zĕr)A substance that, in combination with light, will cause a sensitivity reaction in the substance or organism.