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Sequence analysis of the duplicated exons of BRCA1 and 1A1 - 3B and flanking genomic DNA reveals maintenance of the intron - exon structure and a high degree of nucleotide sequence identity , suggesting that these are non - processed pseudogenes and that the duplication is a recent event in evolutionary terms .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 None