30046
The level of phosphorylated CREB , nuclear factor erythroid 2 - related factor 2 ( Nrf2 ) , glutamylcysteine synthetase ( gamma - GCS ) and heme oxygenase 1 ( HO - 1 ) were measured by western blot method .
 Chemical: glutamylcysteine
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: glutamylcysteine