19272
Ghrelin treatment decreased the number apoptotic cells , cytochrome C release , PAR and , caspase - 3 expressions while increasing Ki67 expression in gastric mucosa exposed to Na2S2O5 .
 Chemical: Na2S2O5
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: Na2S2O5