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Photomedicine in Gynecology and Reproduction
Photomedicine – now at the end of the 20th century a promising new tool
in medicine – was already known in antiquity. Research on photosensitizers,
especially psoralens, started in Egypt, where the active ingredients were isolated
from plants and soon commercialized for treatment of vitiligo.
The modern history of photomedicine started in this century, when Raab
discovered in 1901 that paramecia, having acridine acid incorporated, died in
the sunlight.
PDT (photodynamic therapy) is a typical example of a clinical procedure
which was used before the underlying scientific processes were identified and
understood. Although the principle of PDT is simple, it is based on complex
physical, chemical and physiological interdependencies.
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