7992
E235 also activated DNA damage response signaling , resulting in increased levels of Ser15 - phosphorylated p53 , gamma - H2AX , and phosphorylated checkpoint kinase 2 ( Chk2 ) , although E235 does not appear to cause physical DNA damage .
 Chemical: E235; Chemical: Ser15; Chemical: E235
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: E235; Chemical: Ser15; Chemical: E235