8790
Compared with controls , PNA - treated mice exhibited a blunted postcastration rise in LH ( P < . 001 ) and an absence of LH suppression after E2 administration .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None