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Similar to the effect of other fungicides like captan and captafol which are reported to produce somatic mutations in the same organism , the present study successfully demonstrates variation in the trichome / microtrichia structure of the dorsal thorax of D . melanogaster .
 Chemical: captan; Chemical: captafol
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: captan, captafol 
Answer:
 Chemical: captan; Chemical: captafol