10665
Such peptide - based pharmaceuticals can enhance the multi - faceted functionality of peptide side chains , permitting the peptides to bind cellular targets and receptors necessary to impart their role , while protecting them from degrading cellular influences .
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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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