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Although the change of total free amino acids in shoots of SCN - exposed seedlings was negligible ( p > 0 . 05 ) , responses of different amino acids to SCN ( - ) application were quite different .
 Chemical: amino acids; Chemical: SCN; Chemical: amino acids; Chemical: SCN ( - )
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: amino acids; Chemical: SCN; Chemical: amino acids; Chemical: SCN ( - )