6302
We examined the effects of GR concentration and the ability to dimerize on GR nuclear import , export and nuclear distribution using both live cell microscopy of GFP - tagged GR and immunofluorescence of untagged GR , with both wild type GR ( GRwt ) and dimerization deficient GR ( GRdim ) .
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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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