Lhe South African scientist Professor Tebello Nyokong won the 2009 L'Oréal-UNESCO Prize for Women in Science for his pioneering research into photodynamic therapy specifically adapted to the African environment. She is Professor of Medicinal Chemistry and Nanotechnology at Rhodes University, and is the third South African scientist to receive this award.
Photodynamic therapy (PDT) uses specially developed dyes to direct lethal light at cancer cells, and is being researched around the world as an alternative to chemotherapy. The tincture is injected into the bloodstream or applied directly to the skin. PDT is combined with nanoparticles that absorb and re-emit light to target cancer cells with red light, and kill them with effective treatment.
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