21885
The recovery of IFN - PEG40 in thoracic lymph after IV administration , however , was significantly greater ( 29 % ) when compared to IV IFN - PEG12 .
 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: PEG12