5011
We demonstrate its suitability as a transfection agent by delivering miR - 126 to human vascular endothial cells ( HUVECs ) via polyarginine - and RGD - modified bowties and evaluating the downstream effects on proliferation and tube formation .
 Chemical: polyarginine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: polyarginine