16868
We performed genome - wide copy - number and loss of heterozygosity analysis using Affymetrix 50K SNP mapping arrays and / or comparative genomic hybridization on 16 primary parathyroid carcinomas , local recurrences or distant metastases , and matched normal controls , from 10 individuals .
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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