19700
Using allele - specific real - time quantitative PCR ( RT - qPCR ) , we show that heteroplasmy is common in natural populations with at least 14 % of the individuals carrying multiple mitochondrial haplotypes .
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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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