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Photodynamic therapy (PDT) is an evolving method of treating superficial tumours that is non-invasive and carries minimal risk of toxicity. It combines tumour-selective photosensitiser dyes, tissue oxygen and targeted illumination to generate cytotoxic reactive oxygen species (ROS) within the tumour. In addition to directly acting on tumour cells, PDT damages and restricts tumour microvasculature,...
The healing properties of light have been appreciated for thousands of years. However, the harnessing of light energy to create a rigorous and reliable means to diagnose and treat human disease is only a relatively recent phenomenon. Despite outstanding results from ancient history and subsequent reemergence and refinement of this knowledge over the last 100 years, it took again the hand of serendipity...
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