25876
Our previous studies show that perinatal lipopolysaccharide ( LPS ) exposure enhances adult susceptibility to rotenone - induced injury to the dopaminergic system in the substantia nigra ( SN ) of the adult rat brain .
 Chemical: rotenone
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: rotenone