7329
H3 . 3 targeting to PML is enhanced with an ( H3 . 3 - H4 ) 2 tetramerization mutant of H3 . 3 , suggesting H3 . 3 recruitment to PML as an ( H3 . 3 - H4 ) dimer rather than as a tetramer .
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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