26752
The stabilization effect of dielectric constant and acidic amino acids on arginine - arginine ( arg - arg ) pairings : database survey and computational studies .
 acidic amino acids, arginine, arginine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 acidic amino acids, arginine, arginine