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Specifically , positively charged , 1 , 2 - Dioleoyl - 3 - Trimethylammonium - Propane ( DOTAP ) - cholesterol ( DOTAP : Chol ) liposome - formulated protocells revealed stable in vitro cargo release kinetics and cellular interleukin - 10 ( IL - 10 ) transgene transfection .
 Chemical: 1 , 2 - Dioleoyl - 3 - Trimethylammonium - Propane; Chemical: DOTAP; Chemical: cholesterol; Chemical: DOTAP; Chemical: Chol
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: 1 , 2 - Dioleoyl - 3 - Trimethylammonium - Propane; Chemical: DOTAP; Chemical: cholesterol; Chemical: DOTAP; Chemical: Chol