4759
In conclusion , even though definitive validation studies are required for the establishment of their usefulness and reliability , these identified genes may prove to be the most promising candidate genomic biomarkers of renal papillary injury in rats .
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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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