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So if there are 50 copies of a specific transcript in the biological sample , these transcripts will be captured onto 50 different microbeads , each bead holding roughly 100,000 amplified copies of the specific signature sequence .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None