11318
The use of a polysorbate or sorbitan ester derivatives as stabilizers proved to be necessary to yield submicron particles .
 Chemical: polysorbate; Chemical: sorbitan ester
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: polysorbate; Chemical: sorbitan ester