22103
Thus , to better characterize the dose range over which BPA alters sex specific neuroanatomy , we examined the impact of perinatal BPA exposure on two sexually dimorphic regions in the anterior hypothalamus , the sexually dimorphic nucleus of the preoptic area ( SDN - POA ) and the anterioventral periventricular ( AVPV ) nucleus .
 Chemical: BPA; Chemical: BPA
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, BPA 
Answer:
 Chemical: BPA; Chemical: BPA