2018
Earlier microarray analyses showed prenatal arsenic exposure increased Hsc70 ( HspA8 ) and Hsp70 ( HspA1a ) mRNAs in livers of 10 - week - old mice .
 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