20432
Using a combination of 1DGE - and 2DGE - based proteomic approaches , we identified 187 modified peptides ( 174 acetylated , 50 acetimidoylated , and 37 in both forms ) from a total of 88 nonredundant target proteins .
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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:
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