28950
Since AuNPs can weakly adsorb PEG to exert steric stabilization and the remaining citrate can impart charge stabilization , the extent of the contribution of depletion stabilization is unclear .
 Chemical: PEG; Chemical: citrate
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: PEG; Chemical: citrate