3767
Active loading of vaccine antigen in Al ( OH ) 3 - PLGA microspheres was found to : a ) increase with an increasing loading of Al ( OH ) 3 ( 0 . 88 - 3 wt . % ) and addition of porosigen , b ) decrease when the inner Al ( OH ) 3 / trehalose phase to 1 mL outer oil phase and size of microspheres was respectively > 0 . 2 mL and 63 mu m , and c ) change negligibly by PLGA concentration and initial incubation ( loading ) temperature .
 Chemical: Al ( OH ) 3; Chemical: PLGA; Chemical: Al ( OH ) 3; Chemical: Al ( OH ) 3; Chemical: trehalose; Chemical: PLGA
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: Al ( OH ) 3; Chemical: PLGA; Chemical: Al ( OH ) 3; Chemical: Al ( OH ) 3; Chemical: trehalose; Chemical: PLGA