23565
To assess a possible HA size - dependence for signaling , we tested purified HA fractions of different weight - average molar mass ( Mw ) and with narrow size distributions and Select - HA for stimulation of HARE - mediated gene expression using an NF - kappa B promoter - driven luciferase reporter system .
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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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