5368
However , when PLL of high molecular weight ( > 30 , 000 ) was used at higher concentrations ( > 0 . 05 % ) , aggregation of surface - modified liposomes increased particle size and hampered distribution to inner ocular tissues .
 Chemical: PLL
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: PLL