19966
This study focuses on the effects of SWCNT - PAMAM nanomaterials and their individual components on the C2C12 murine cell line , which is a mixed population of stem and progenitor cells .
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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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