20202
The aim of the present work was 1 ) to compare the two signatures in terms of gene expression deregulations and molecular features / pathways and 2 ) to test the capacity of the post - radiotherapy signature in classifying the post - Chernobyl series of tumors and reciprocally of the post Chernobyl signature in classifying the post - radiotherapy induced tumors .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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