18056
In the present study we show that a number of cancer cell lines from different tissues display dramatically increased expression of the Cockayne Syndrome group B ( CSB ) protein , a DNA repair factor , that has recently been shown to be involved in cell robustness .
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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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