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Photofrin (R) ( porfimer sodium ) is a photosensitive reagent used for photodynamic therapy ( PDT ) of tumors and dysplasias .
 Chemical: Photofrin; Chemical: porfimer sodium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Photofrin; Chemical: porfimer sodium