21884
IFN - PEG40 , however , was incompletely absorbed from the SC injection site ( Fabs 23 % ) and showed similar lymphatic access after SC administration to IFN - PEG12 ( 21 % ) .
 Chemical: PEG40; Chemical: PEG12
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: PEG40; Chemical: PEG12