13950
Here , we report extraordinarily high durability of protein - assisted nanoparticle self - assembly systems yielding bifunctional colloidal superstructures resistant to extreme denaturing conditions intolerable for most proteins ( e . g . , high concentrations of chaotropic agents , high temperature ) .
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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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