4388
About 700 kb of the entire CYP3A genomic segment was cloned into a HAC ( CYP3A - HAC ) , and trans - chromosomic ( Tc ) mice carrying a single copy of germline - transmittable CYP3A - HAC were generated via a chromosome - engineering technique .
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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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