19572
MH loaded nanoparticles ( MHNP ) were coated with tween 80 ( cMHNP ) to improve its brain uptake followed by their optimization employing two factor - three level ( 3 ( 2 ) ) central composite design ( CCD ) in order to minimize particle size and maximize drug entrapment efficiency ( DEE ) and validated .
 Chemical: tween 80
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: tween 80