30567
We demonstrate that octameric CENP - A nucleosomes assembled in vitro exhibit reduced heights , indicating that they are physically distinct from H3 nucleosomes and negating the need to invoke the presence of hemisomes .
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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:
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