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Using a novel method combining chromatin immunoprecipitation and genomic array hybridization , we have identified a 460 - kb CENP - A - binding DNA domain of a neocentromere derived from the 20p12 region of an invdup ( 20p ) human marker chromosome .
 460 - kb CENP - A - binding DNA domain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 460 - kb CENP - A - binding DNA domain