12035
These studies demonstrate that site - specific recognition of the bxd PRE by d ( GA ) ( n ) repeat binding activities mediates PcG - dependent silencing .
 bxd PRE, PcG
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 bxd PRE, PcG