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Since PARP - 1 is supposed to be part of a multimeric repressor of sodium iodide symporter ( NIS ) expression , in this study the effect of the PARP inhibitor PJ34 on several properties of thyroid cancer cell lines was investigated .
 Chemical: sodium iodide; Chemical: PJ34
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: sodium iodide; Chemical: PJ34