5805
Western blot analysis revealed that aspidin PB inhibited PI3K expression , phosphorylation of Ser473 Akt and Ser9 GSK3 beta followed by up - regulation of nonsteroidal anti - inflammatory drugs activated gene - 1 ( NAG - 1 ) expression .
 Chemical: aspidin PB; Chemical: Ser473; Chemical: Ser9
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: aspidin PB; Chemical: Ser473; Chemical: Ser9