9182
Resumption of replication by forks may be necessary but is not sufficient for timely completion of the cell cycle after HU arrest , as depletion of WRN or BLM compromises fork recovery to a similar degree , but only BLM depletion leads to extensive delay of cell division after HU , as well as more pronounced chromatin bridging .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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