6073
Ldb1 and Ldb2 are coregulators that mediate Lin11 - Isl1 - Mec3 ( LIM ) - homeodomain ( HD ) and LIM - only transcription factor - driven gene regulation .
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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:
 None