15862
It has been previously reported that Bisphenol A ( BPA ) can disturb the development of mammary structure and increase the risk of breast cancer in experimental animals .
 Bisphenol A, BPA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Bisphenol A, BPA