5722
To further investigate the protective effect and underlying mechanism of catalpol , astrocytes were pretreated with low ( 0 . 1mM ) and high dose ( 0 . 5mM ) catalpol for 1h prior to LPS plus interferon - gamma stimulation .
 Chemical: catalpol; Chemical: catalpol
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: catalpol; Chemical: catalpol