1751
Materials and methods : Three modified - release formulations of aminophylline consisted of Carbopol (R) 971P / HPMC K4M ( F - I ) , and HPMC K100M ( F - II ) or HPMC K4M ( F - III ) were used .
 Chemical: aminophylline; Chemical: Carbopol
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: aminophylline; Chemical: Carbopol