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Representational difference analysis has been used to isolate cDNA clones corresponding to mRNA species activated following stable expression of HOX11 in NIH 3T3 cells .
 cDNA clones, HOX11, mRNA species, NIH 3T3 cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cDNA clones, HOX11, mRNA species, NIH 3T3 cells