494
EGF - induced Egr - 1 expression required the activation of the ERK1 / 2 and PI3K / Akt signaling pathways and was unrelated to EGF - induced H ( 2 ) O ( 2 ) production and activation of the p38 MAPK pathway .
 Chemical: H ( 2 ) O ( 2 )
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: H ( 2 ) O ( 2 )