7090
We have determined their influence on the beta - amyloid ( beta A ) aggregation process , beta - secretase and acethylcholinesterase activities on cell - free systems , on the redox and lipid peroxidation status , and on the vulnerability to apoptotic death in an APPswe neuroblastoma cell line , before and after hydrogen peroxide treatment .
 Chemical: hydrogen peroxide
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: hydrogen peroxide