4905
In the present study , the effects of OP and BPA on Ca levels in the serum and expression of Ca transport genes in the duodenum , and kidney were investigated in pregnant mice .
 Chemical: BPA; Chemical: Ca; Chemical: Ca
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: BPA; Chemical: Ca; Chemical: Ca