19329
Such distinctive properties can reduce the premature disassembly of NCs upon dilution in the bloodstream and prolong NCs ' in vivo circulation with the enhancement of intratumoral accumulation of NCs , which has a bearing on therapeutic effectiveness .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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