23890
Taken together , these data indicated that the increasing of ATF2 expression is mediated via oxidative stress induced by arsenic in SV - HUC - 1 cells , and JNK or p38 rather than ERK is responsible for arsenic - induced ATF2 expression .
 Chemical: arsenic; 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: arsenic; Chemical: arsenic