6502
This study demonstrates that PUE , at a range of concentrations ( from 0 to 100 mu g / ml ) , concentration - dependently inhibited the migration / invasion capacities of Saos - 2 without cytotoxic effects .
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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