30055
CONCLUSION : We provided documentation of neuroprotective effect of a natural flavone , calycopterin , against H2O2 - induced oxidative stress in differentiated PC12 cells by modulating the level of CREB phosphorylation and Nrf2 pathway .
 Chemical: calycopterin; Chemical: H2O2
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: calycopterin; Chemical: H2O2