2160
Two synthetic peptides , Ac - RWAACAA and Ac - RWAAKAA , were reacted with 48 chemicals ( 34 sensitizers and 14 non - sensitizers ) .
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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