25619
As seen in African green monkey kidney CV1 cells , the present study confirmed that BPA and BPAF act as ER alpha agonists ( half maximal effective concentration EC50 of 10 - 100nM ) and as AR antagonists ( half maximal inhibitory concentration IC50 of 1 - 2 mu M ) .
 Chemical: BPA; Chemical: BPAF
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: BPA, BPAF 
Answer:
 Chemical: BPA; Chemical: BPAF