23887
In this study , ATF2 expression was measured in NaAsO2 - treated human uroepithelial cell line ( SV - HUC - 1 ) with 1 , 2 , 4 , 8 and 10 mu M concentrations in order to provide some basis data for the study on mechanism of bladder cancer induced by arsenic .
 Chemical: NaAsO2; Chemical: arsenic
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: NaAsO2; Chemical: arsenic