12892
There was a significant overlap ( 42 genes ) between the 3 and 30 ppb differentially expressed gene lists , with two of these genes ( CYP17A1 and SAMHD1 ) present in all three atrazine treatments .
 Chemical: atrazine
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: atrazine